diff --git a/.gitignore b/.gitignore
index 14e704b..9279e50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 #Compiled files
 dist
 *.js
-!*.spec.js
 
 #IDE
 .vscode
diff --git a/README.md b/README.md
index 5c18319..f7ed2f7 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Will convert a Typescript file to a PlantUML file. Following all inheritances.
 
 ```
 npm install --global tplant
-tplant --input sample/Classes/Greeter.ts --output sample/Classes/Greeter.puml
+tplant --input test/Playground/Classes/Greeter.ts --output test/Playground/Classes/Greeter.puml
 ```
 
 ## Options
diff --git a/package-lock.json b/package-lock.json
index 167cd41..6151f5f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "tplant",
-  "version": "2.1.8",
+  "version": "2.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
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+    "@babel/core": {
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+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.4.4.tgz",
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       "dev": true,
       "requires": {
-        "chalk": "^2.0.0",
-        "esutils": "^2.0.2",
-        "js-tokens": "^4.0.0"
+        "@babel/code-frame": "^7.0.0",
+        "@babel/generator": "^7.4.4",
+        "@babel/helpers": "^7.4.4",
+        "@babel/parser": "^7.4.4",
+        "@babel/template": "^7.4.4",
+        "@babel/traverse": "^7.4.4",
+        "@babel/types": "^7.4.4",
+        "convert-source-map": "^1.1.0",
+        "debug": "^4.1.0",
+        "json5": "^2.1.0",
+        "lodash": "^4.17.11",
+        "resolve": "^1.3.2",
+        "semver": "^5.4.1",
+        "source-map": "^0.5.0"
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+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
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+        "ms": {
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+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz",
+      "integrity": "sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==",
+      "dev": true
+    },
+    "whatwg-url": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-6.5.0.tgz",
+      "integrity": "sha512-rhRZRqx/TLJQWUpQ6bmrt2UV4f0HCQ463yQuONJqC6fO2VoEb1pTYddbe59SkYq87aoM5A3bdhMZiUiVws+fzQ==",
+      "dev": true,
+      "requires": {
+        "lodash.sortby": "^4.7.0",
+        "tr46": "^1.0.1",
+        "webidl-conversions": "^4.0.2"
+      }
+    },
     "which": {
-      "version": "1.2.14",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.2.14.tgz",
-      "integrity": "sha1-mofEN48D6CfOyvGs31bHNsAcFOU=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
+      "integrity": "sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==",
       "dev": true,
       "requires": {
         "isexe": "^2.0.0"
@@ -1069,14 +5116,11 @@
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
       "dev": true
     },
-    "wide-align": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
-      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
-      "dev": true,
-      "requires": {
-        "string-width": "^1.0.2 || 2"
-      }
+    "wordwrap": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
+      "integrity": "sha1-o9XabNXAvAAI03I0u68b7WMFkQc=",
+      "dev": true
     },
     "wrap-ansi": {
       "version": "2.1.0",
@@ -1130,6 +5174,32 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
+    "write-file-atomic": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-2.4.1.tgz",
+      "integrity": "sha512-TGHFeZEZMnv+gBFRfjAcxL5bPHrsGKtnb4qsFAws7/vlh+QfwAaySIw4AXP9ZskTTh5GWu3FLuJhsWVdiJPGvg==",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "^4.1.11",
+        "imurmurhash": "^0.1.4",
+        "signal-exit": "^3.0.2"
+      }
+    },
+    "ws": {
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-5.2.2.tgz",
+      "integrity": "sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==",
+      "dev": true,
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    },
+    "xml-name-validator": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-3.0.0.tgz",
+      "integrity": "sha512-A5CUptxDsvxKJEU3yO6DuWBSJz/qizqzJKOMIfUJHETbBw/sFaDxgd6fxm1ewUaM0jZ444Fc5vC5ROYurg/4Pw==",
+      "dev": true
+    },
     "y18n": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
@@ -1143,116 +5213,42 @@
       "dev": true
     },
     "yargs": {
-      "version": "13.2.2",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.2.2.tgz",
-      "integrity": "sha512-WyEoxgyTD3w5XRpAQNYUB9ycVH/PQrToaTXdYXRdOXvEy1l19br+VJsc0vcO8PTGg5ro/l/GY7F/JMEBmI0BxA==",
+      "version": "12.0.5",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
       "dev": true,
       "requires": {
         "cliui": "^4.0.0",
+        "decamelize": "^1.2.0",
         "find-up": "^3.0.0",
-        "get-caller-file": "^2.0.1",
-        "os-locale": "^3.1.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.0.0",
         "require-directory": "^2.1.1",
-        "require-main-filename": "^2.0.0",
+        "require-main-filename": "^1.0.1",
         "set-blocking": "^2.0.0",
-        "string-width": "^3.0.0",
+        "string-width": "^2.0.0",
         "which-module": "^2.0.0",
-        "y18n": "^4.0.0",
-        "yargs-parser": "^13.0.0"
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^11.1.1"
       },
       "dependencies": {
-        "ansi-regex": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+        "require-main-filename": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
+          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
           "dev": true
-        },
-        "string-width": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
-          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
-          "dev": true,
-          "requires": {
-            "emoji-regex": "^7.0.1",
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^5.1.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
-          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^4.1.0"
-          }
         }
       }
     },
     "yargs-parser": {
-      "version": "13.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.0.0.tgz",
-      "integrity": "sha512-w2LXjoL8oRdRQN+hOyppuXs+V/fVAYtpcrRxZuF7Kt/Oc+Jr2uAcVntaUTNT6w5ihoWfFDpNY8CPx1QskxZ/pw==",
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
       "dev": true,
       "requires": {
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
       }
-    },
-    "yargs-unparser": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
-      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
-      "dev": true,
-      "requires": {
-        "flat": "^4.1.0",
-        "lodash": "^4.17.11",
-        "yargs": "^12.0.5"
-      },
-      "dependencies": {
-        "get-caller-file": {
-          "version": "1.0.3",
-          "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
-          "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==",
-          "dev": true
-        },
-        "require-main-filename": {
-          "version": "1.0.1",
-          "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz",
-          "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
-          "dev": true
-        },
-        "yargs": {
-          "version": "12.0.5",
-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
-          "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
-          "dev": true,
-          "requires": {
-            "cliui": "^4.0.0",
-            "decamelize": "^1.2.0",
-            "find-up": "^3.0.0",
-            "get-caller-file": "^1.0.1",
-            "os-locale": "^3.0.0",
-            "require-directory": "^2.1.1",
-            "require-main-filename": "^1.0.1",
-            "set-blocking": "^2.0.0",
-            "string-width": "^2.0.0",
-            "which-module": "^2.0.0",
-            "y18n": "^3.2.1 || ^4.0.0",
-            "yargs-parser": "^11.1.1"
-          }
-        },
-        "yargs-parser": {
-          "version": "11.1.1",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
-          "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
-          "dev": true,
-          "requires": {
-            "camelcase": "^5.0.0",
-            "decamelize": "^1.2.0"
-          }
-        }
-      }
     }
   }
 }
diff --git a/package.json b/package.json
index e2eb36f..0cfd6f7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tplant",
-  "version": "2.1.8",
+  "version": "2.2.0",
   "description": "Typescript to PlantUML",
   "keywords": [
     "Class Diagram",
@@ -24,8 +24,8 @@
   "files": [
     "dist"
   ],
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "dist/tplant.js",
+  "types": "dist/tplant.d.ts",
   "bin": {
     "tplant": "dist/index.js"
   },
@@ -36,7 +36,7 @@
     "lint:fix": "tslint -p . --fix",
     "prepare": "npm run build",
     "prepublishOnly": "npm test && npm run lint",
-    "test": "npm run build && mocha --timeout 0"
+    "test": "jest"
   },
   "dependencies": {
     "commander": "^2.20.0",
@@ -45,14 +45,20 @@
   },
   "devDependencies": {
     "@types/glob": "^7.1.1",
+    "@types/jest": "^24.0.13",
     "@types/node": "^12.0.0",
-    "mocha": "^6.1.4",
+    "jest": "^24.8.0",
     "pre-commit": "^1.2.2",
+    "ts-jest": "^24.0.2",
     "tslint": "^5.16.0",
     "tslint-microsoft-contrib": "^6.1.1"
   },
   "pre-commit": [
     "lint",
     "test"
-  ]
+  ],
+  "jest": {
+    "preset": "ts-jest",
+    "testEnvironment": "node"
+  }
 }
diff --git a/src/components/Class.ts b/src/Components/Class.ts
similarity index 57%
rename from src/components/Class.ts
rename to src/Components/Class.ts
index edd1832..d2bffc8 100644
--- a/src/components/Class.ts
+++ b/src/Components/Class.ts
@@ -1,25 +1,25 @@
-
 import * as os from 'os';
-import { ComponentKind } from './ComponentKind';
-import { IComponentComposite } from './IComponentComposite';
-import { Interface } from './Interface';
-import { Method } from './Method';
-import { Property } from './Property';
-import { TypeParameter } from './TypeParameter';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
 
 /**
  * Represents the metadata for a class within a typescript file.
  */
 export class Class implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.CLASS;
-    public name: string = '';
+    public readonly componentKind: ComponentKind = ComponentKind.CLASS;
+    public readonly name: string;
     public isAbstract: boolean = false;
     public isStatic: boolean = false;
-    public constructorMethods: Method[] = [];
-    public members: (Method | Property)[] = [];
-    public extendsClass: string = '';
+    public constructorMethods: IComponentComposite[] = [];
+    public members: IComponentComposite[] = [];
+    public extendsClass: string | undefined;
     public implementsInterfaces: string[] = [];
-    public typeParameters: TypeParameter[] = [];
+    public typeParameters: IComponentComposite[] = [];
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
     public toPUML(): string {
         const result: string[] = [];
         const firstLine: string[] = [];
@@ -30,22 +30,26 @@ export class Class implements IComponentComposite {
         if (this.typeParameters.length > 0) {
             firstLine.push('<');
             firstLine.push(this.typeParameters
-                                    .map((typeParameter: TypeParameter): string => typeParameter.toPUML())
-                                    .join(', '));
+                .map((typeParameter: IComponentComposite): string => typeParameter.toPUML())
+                .join(', '));
             firstLine.push('>');
         }
-        if (this.extendsClass !== '') {
+        if (this.extendsClass !== undefined) {
             firstLine.push(` extends ${this.extendsClass}`);
         }
         if (this.implementsInterfaces.length > 0) {
             firstLine.push(` implements ${this.implementsInterfaces.join(', ')}`);
         }
-        firstLine.push(' {');
+        if (this.members.length > 0) {
+            firstLine.push(' {');
+        }
         result.push(firstLine.join(''));
         this.members.forEach((member: IComponentComposite): void => {
             result.push(`    ${member.toPUML()}`);
         });
-        result.push('}');
+        if (this.members.length > 0) {
+            result.push('}');
+        }
 
         return result.join(os.EOL);
     }
diff --git a/src/Components/Enum.ts b/src/Components/Enum.ts
new file mode 100644
index 0000000..0882f64
--- /dev/null
+++ b/src/Components/Enum.ts
@@ -0,0 +1,33 @@
+import * as os from 'os';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for an Enum within a typescript file.
+ */
+export class Enum implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.ENUM;
+    public readonly name: string;
+    public values: IComponentComposite[] = [];
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        const result: string[] = [];
+        let declaration: string = `enum ${this.name}`;
+        if (this.values.length > 0) {
+            declaration += ' {';
+        }
+        result.push(declaration);
+        this.values.forEach((enumValue: IComponentComposite): void => {
+            result.push(`    ${enumValue.toPUML()}`);
+        });
+        if (this.values.length > 0) {
+            result.push('}');
+        }
+
+        return result.join(os.EOL);
+    }
+}
diff --git a/src/Components/EnumValue.ts b/src/Components/EnumValue.ts
new file mode 100644
index 0000000..8a3ce7c
--- /dev/null
+++ b/src/Components/EnumValue.ts
@@ -0,0 +1,19 @@
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for the value or member of an enum within typescript
+ */
+export class EnumValue implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.PROPERTY;
+    public readonly name: string;
+    public value: string | undefined;
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        return this.name;
+    }
+}
diff --git a/src/components/File.ts b/src/Components/File.ts
similarity index 54%
rename from src/components/File.ts
rename to src/Components/File.ts
index 631c42c..3eb0f6f 100644
--- a/src/components/File.ts
+++ b/src/Components/File.ts
@@ -1,19 +1,15 @@
-
 import * as os from 'os';
-import { Class } from './Class';
-import { ComponentKind } from './ComponentKind';
-import { Enum } from './Enum';
-import { IComponentComposite } from './IComponentComposite';
-import { Interface } from './Interface';
-import { Namespace } from './Namespace';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
 
 /**
  * Represents the metadata for a file containing typescript
  */
 export class File implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.FILE;
-    public name: string = '';
+    public readonly componentKind: ComponentKind = ComponentKind.FILE;
+    public readonly name: string = '';
     public parts: IComponentComposite[] = [];
+
     public toPUML(): string {
         const result: string[] = [];
         this.parts.forEach((part: IComponentComposite): void => {
diff --git a/src/Components/Interface.ts b/src/Components/Interface.ts
new file mode 100644
index 0000000..d51a686
--- /dev/null
+++ b/src/Components/Interface.ts
@@ -0,0 +1,46 @@
+import * as os from 'os';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for an interface within typescript
+ */
+export class Interface implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.INTERFACE;
+    public readonly name: string;
+    public members: IComponentComposite[] = [];
+    public extendsInterface: string[] = [];
+    public typeParameters: IComponentComposite[] = [];
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        const result: string[] = [];
+        const firstLine: string[] = [];
+        firstLine.push(`interface ${this.name}`);
+        if (this.typeParameters.length > 0) {
+            firstLine.push('<');
+            firstLine.push(this.typeParameters
+                .map((typeParameter: IComponentComposite): string => typeParameter.toPUML())
+                .join(', '));
+            firstLine.push('>');
+        }
+        if (this.extendsInterface.length > 0) {
+            firstLine.push(` extends ${this.extendsInterface.join(', ')}`);
+        }
+        if (this.members.length > 0) {
+            firstLine.push(' {');
+        }
+        result.push(firstLine.join(''));
+        this.members.forEach((member: IComponentComposite): void => {
+            result.push(`    ${member.toPUML()}`);
+        });
+        if (this.members.length > 0) {
+            result.push('}');
+        }
+
+        return result.join(os.EOL);
+    }
+}
diff --git a/src/components/Method.ts b/src/Components/Method.ts
similarity index 54%
rename from src/components/Method.ts
rename to src/Components/Method.ts
index d640418..6bf0508 100644
--- a/src/components/Method.ts
+++ b/src/Components/Method.ts
@@ -1,29 +1,32 @@
-
-import { ComponentKind } from './ComponentKind';
-import { IComponentComposite } from './IComponentComposite';
-import { Modifier } from './Modifier';
-import { Parameter } from './Parameter';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+import { Modifier } from '../Models/Modifier';
 
 /**
  * Represents the metadata for a method within typescript
  */
 export class Method implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.METHOD;
-    public name: string = '';
-    public parameters: Parameter[] = [];
-    public returnType: string = '';
+    public readonly componentKind: ComponentKind = ComponentKind.METHOD;
+    public readonly name: string;
+    public parameters: IComponentComposite[] = [];
+    public returnType: string = 'any';
     public modifier: Modifier = 'public';
     public isAbstract: boolean = false;
     public isOptional: boolean = false;
     public isStatic: boolean = false;
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
     public toPUML(): string {
         let result: string = { public: '+', private: '-', protected: '#' }[this.modifier];
         result += (this.isAbstract ? '{abstract} ' : '');
         result += (this.isStatic ? '{static} ' : '');
         result += `${this.name}(`;
         result += this.parameters
-                    .map((parameter: Parameter): string => parameter.toPUML())
-                    .join(', ');
+            .map((parameter: IComponentComposite): string => parameter.toPUML())
+            .join(', ');
         result += `): ${this.returnType}`;
 
         return result;
diff --git a/src/Components/Namespace.ts b/src/Components/Namespace.ts
new file mode 100644
index 0000000..c8481b0
--- /dev/null
+++ b/src/Components/Namespace.ts
@@ -0,0 +1,37 @@
+import * as os from 'os';
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for a namespace within typescript
+ */
+export class Namespace implements IComponentComposite {
+    public readonly name: string;
+    public readonly componentKind: ComponentKind = ComponentKind.NAMESPACE;
+    public parts: IComponentComposite[] = [];
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        const result: string[] = [];
+        const declaration: string[] = [];
+        declaration.push(`namespace ${this.name}`);
+        if (this.parts.length > 0) {
+            declaration.push(' {');
+        }
+        result.push(declaration.join(''));
+        this.parts.forEach((part: IComponentComposite): void => {
+            result.push(
+                part.toPUML()
+                    .replace(/^(?!\s*$)/gm, '    ')
+            );
+        });
+        if (this.parts.length > 0) {
+            result.push('}');
+        }
+
+        return result.join(os.EOL);
+    }
+}
diff --git a/src/Components/Parameter.ts b/src/Components/Parameter.ts
new file mode 100644
index 0000000..1ec2636
--- /dev/null
+++ b/src/Components/Parameter.ts
@@ -0,0 +1,21 @@
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for a parameter within typescript
+ */
+export class Parameter implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.PARAMETER;
+    public readonly name: string;
+    public hasInitializer: boolean = false;
+    public isOptional: boolean = false;
+    public parameterType: string = 'any';
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        return `${this.name}${this.isOptional || this.hasInitializer ? '?' : ''}: ${this.parameterType}`;
+    }
+}
diff --git a/src/Components/Property.ts b/src/Components/Property.ts
new file mode 100644
index 0000000..942eda8
--- /dev/null
+++ b/src/Components/Property.ts
@@ -0,0 +1,24 @@
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+import { Modifier } from '../Models/Modifier';
+
+/**
+ * Represents the metadata for a property within typescript
+ */
+export class Property implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.PROPERTY;
+    public readonly name: string;
+    public modifier: Modifier = 'public';
+    public returnType: string = 'any';
+    public isOptional: boolean = false;
+    public isStatic: boolean = false;
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        return `${{ public: '+', private: '-', protected: '#' }[this.modifier]}${(this.isStatic ? '{static} ' : '')
+            }${this.name}${(this.isOptional ? '?' : '')}: ${this.returnType}`;
+    }
+}
diff --git a/src/Components/TypeParameter.ts b/src/Components/TypeParameter.ts
new file mode 100644
index 0000000..46ff0a2
--- /dev/null
+++ b/src/Components/TypeParameter.ts
@@ -0,0 +1,19 @@
+import { ComponentKind } from '../Models/ComponentKind';
+import { IComponentComposite } from '../Models/IComponentComposite';
+
+/**
+ * Represents the metadata for a type parameter within typescript
+ */
+export class TypeParameter implements IComponentComposite {
+    public readonly componentKind: ComponentKind = ComponentKind.PARAMETER;
+    public readonly name: string;
+    public constraint: string | undefined;
+
+    constructor(name: string) {
+        this.name = name;
+    }
+
+    public toPUML(): string {
+        return `${this.name}${(this.constraint !== undefined ? ` extends ${this.constraint}` : '')}`;
+    }
+}
diff --git a/src/Factories/ClassFactory.ts b/src/Factories/ClassFactory.ts
new file mode 100644
index 0000000..e5b122d
--- /dev/null
+++ b/src/Factories/ClassFactory.ts
@@ -0,0 +1,45 @@
+import ts from 'typescript';
+import { Class } from '../Components/Class';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace ClassFactory {
+    export function create(classSymbol: ts.Symbol, checker: ts.TypeChecker): Class {
+        const result: Class = new Class(classSymbol.getName());
+        const classDeclaration: ts.ClassDeclaration[] | undefined = <ts.ClassDeclaration[] | undefined>classSymbol.getDeclarations();
+
+        if (classDeclaration !== undefined && classDeclaration.length > 0) {
+            result.isStatic = ComponentFactory.isStatic(classDeclaration[classDeclaration.length - 1]);
+            result.isAbstract = ComponentFactory.isAbstract(classDeclaration[classDeclaration.length - 1]);
+        }
+
+        if (classSymbol.members !== undefined) {
+            result.members = ComponentFactory.serializeMethods(classSymbol.members, checker);
+            result.typeParameters = ComponentFactory.serializeTypeParameters(classSymbol.members, checker);
+        }
+
+        if (classSymbol.exports !== undefined) {
+            result.members = result.members.concat(ComponentFactory.serializeMethods(classSymbol.exports, checker));
+        }
+
+        if (classSymbol.globalExports !== undefined) {
+            result.members = result.members.concat(ComponentFactory.serializeMethods(classSymbol.globalExports, checker));
+        }
+
+        if (classDeclaration !== undefined && classDeclaration.length > 0) {
+            const heritageClauses: ts.NodeArray<ts.HeritageClause> | undefined =
+                classDeclaration[classDeclaration.length - 1].heritageClauses;
+
+            if (heritageClauses !== undefined) {
+                heritageClauses.forEach((heritageClause: ts.HeritageClause): void => {
+                    if (heritageClause.token === ts.SyntaxKind.ExtendsKeyword) {
+                        result.extendsClass = ComponentFactory.getExtendsHeritageClauseName(heritageClause);
+                    } else if (heritageClause.token === ts.SyntaxKind.ImplementsKeyword) {
+                        result.implementsInterfaces = ComponentFactory.getImplementsHeritageClauseNames(heritageClause);
+                    }
+                });
+            }
+        }
+
+        return result;
+    }
+}
diff --git a/src/Factories/ComponentFactory.ts b/src/Factories/ComponentFactory.ts
new file mode 100644
index 0000000..8f84a04
--- /dev/null
+++ b/src/Factories/ComponentFactory.ts
@@ -0,0 +1,209 @@
+import ts from 'typescript';
+import { Method } from '../Components/Method';
+import { Property } from '../Components/Property';
+import { TypeParameter } from '../Components/TypeParameter';
+import { IComponentComposite } from '../Models/IComponentComposite';
+import { Modifier } from '../Models/Modifier';
+import { ClassFactory } from './ClassFactory';
+import { EnumFactory } from './EnumFactory';
+import { InterfaceFactory } from './InterfaceFactory';
+import { MethodFactory } from './MethodFactory';
+import { NamespaceFactory } from './NamespaceFactory';
+import { PropertyFactory } from './PropertyFactory';
+import { TypeParameterFactory } from './TypeParameterFactory';
+
+export namespace ComponentFactory {
+    export function isNodeExported(node: ts.Node): boolean {
+        // tslint:disable-next-line no-bitwise
+        return (node.flags & ts.ModifierFlags.Export) !== 0 ||
+            node.parent.kind === ts.SyntaxKind.SourceFile ||
+            node.parent.kind === ts.SyntaxKind.ModuleBlock;
+    }
+
+    export function create(node: ts.Node, checker: ts.TypeChecker): IComponentComposite[] {
+        const componentComposites: IComponentComposite[] = [];
+
+        ts.forEachChild(node, (childNode: ts.Node) => {
+
+            // Only consider exported nodes
+            if (!isNodeExported(childNode)) {
+                return;
+            }
+
+            if (childNode.kind === ts.SyntaxKind.ClassDeclaration) {
+                const currentNode: ts.ClassLikeDeclarationBase = <ts.ClassLikeDeclarationBase>childNode;
+                if (currentNode.name === undefined) {
+                    return;
+                }
+                // This is a top level class, get its symbol
+                const classSymbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
+                if (classSymbol === undefined) {
+                    return;
+                }
+                componentComposites.push(ClassFactory.create(classSymbol, checker));
+
+                // No need to walk any further, class expressions/inner declarations
+                // cannot be exported
+            } else if (childNode.kind === ts.SyntaxKind.InterfaceDeclaration) {
+                const currentNode: ts.InterfaceDeclaration = <ts.InterfaceDeclaration>childNode;
+                const interfaceSymbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
+                if (interfaceSymbol === undefined) {
+                    return;
+                }
+                componentComposites.push(InterfaceFactory.create(interfaceSymbol, checker));
+            } else if (childNode.kind === ts.SyntaxKind.ModuleDeclaration) {
+                const currentNode: ts.NamespaceDeclaration = <ts.NamespaceDeclaration>childNode;
+                const namespaceSymbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
+                if (namespaceSymbol === undefined) {
+                    return;
+                }
+                componentComposites.push(NamespaceFactory.create(namespaceSymbol, checker));
+            } else if (childNode.kind === ts.SyntaxKind.EnumDeclaration) {
+                const currentNode: ts.EnumDeclaration = <ts.EnumDeclaration>childNode;
+                const enumSymbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
+                if (enumSymbol === undefined) {
+                    return;
+                }
+                componentComposites.push(EnumFactory.create(enumSymbol));
+
+                return;
+            }
+        });
+
+        return componentComposites;
+    }
+
+    function getModifier(modifiers: ts.NodeArray<ts.Modifier>): Modifier {
+        for (const modifier of modifiers) {
+            if (modifier.kind === ts.SyntaxKind.PrivateKeyword) {
+                return 'private';
+            }
+            if (modifier.kind === ts.SyntaxKind.PublicKeyword) {
+                return 'public';
+            }
+            if (modifier.kind === ts.SyntaxKind.ProtectedKeyword) {
+                return 'protected';
+            }
+        }
+
+        return 'public';
+    }
+
+    export function getExtendsHeritageClauseName(heritageClause: ts.HeritageClause): string {
+        return (<ts.Identifier>heritageClause.types[0].expression).text;
+    }
+
+    function getInterfaceName(nodeObject: ts.ExpressionWithTypeArguments): string {
+        return (<ts.Identifier>nodeObject.expression).text;
+    }
+
+    export function getImplementsHeritageClauseNames(heritageClause: ts.HeritageClause): string[] {
+        return heritageClause.types.map(getInterfaceName);
+    }
+
+    function isMethod(declaration: ts.NamedDeclaration): boolean {
+        return declaration.kind === ts.SyntaxKind.MethodDeclaration ||
+            declaration.kind === ts.SyntaxKind.MethodSignature;
+    }
+
+    function isProperty(declaration: ts.NamedDeclaration): boolean {
+        return declaration.kind === ts.SyntaxKind.PropertySignature ||
+            declaration.kind === ts.SyntaxKind.PropertyDeclaration ||
+            declaration.kind === ts.SyntaxKind.GetAccessor ||
+            declaration.kind === ts.SyntaxKind.SetAccessor ||
+            declaration.kind === ts.SyntaxKind.Parameter;
+    }
+
+    function isTypeParameter(declaration: ts.NamedDeclaration): boolean {
+        return declaration.kind === ts.SyntaxKind.TypeParameter;
+    }
+
+    export function getMemberModifier(memberDeclaration: ts.Declaration): Modifier {
+        const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
+
+        if (memberModifiers === undefined) {
+            return 'public';
+        }
+
+        return getModifier(memberModifiers);
+    }
+
+    export function isAbstract(memberDeclaration: ts.Declaration): boolean {
+
+        const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
+
+        if (memberModifiers !== undefined) {
+            for (const memberModifier of memberModifiers) {
+                if (memberModifier.kind === ts.SyntaxKind.AbstractKeyword) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    export function isStatic(memberDeclaration: ts.Declaration): boolean {
+        const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
+
+        if (memberModifiers !== undefined) {
+            for (const memberModifier of memberModifiers) {
+                if (memberModifier.kind === ts.SyntaxKind.StaticKeyword) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    export function serializeMethods(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>, checker: ts.TypeChecker): (Property | Method)[] {
+        const result: (Property | Method)[] = [];
+
+        if (memberSymbols !== undefined) {
+            memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
+                const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
+                if (memberDeclarations === undefined) {
+                    return;
+                }
+                memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
+                    if (isMethod(memberDeclaration)) {
+                        result.push(MethodFactory.create(memberSymbol, memberDeclaration, checker));
+                    } else if (isProperty(memberDeclaration)) {
+                        result.push(PropertyFactory.create(memberSymbol, memberDeclaration, checker));
+                    }
+                });
+            });
+        }
+
+        return result;
+    }
+
+    export function serializeTypeParameters(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>, checker: ts.TypeChecker): TypeParameter[] {
+        const result: TypeParameter[] = [];
+
+        if (memberSymbols !== undefined) {
+            memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
+                const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
+                if (memberDeclarations === undefined) {
+                    return;
+                }
+                memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
+                    if (isTypeParameter(memberDeclaration)) {
+                        result.push(TypeParameterFactory.create(memberSymbol, memberDeclaration, checker));
+                    }
+                });
+            });
+        }
+
+        return result;
+    }
+
+    export function hasInitializer(declaration: ts.ParameterDeclaration): boolean {
+        return declaration.initializer !== undefined;
+    }
+
+    export function isOptional(declaration: ts.PropertyDeclaration | ts.ParameterDeclaration | ts.MethodDeclaration): boolean {
+        return declaration.questionToken !== undefined;
+    }
+}
diff --git a/src/Factories/EnumFactory.ts b/src/Factories/EnumFactory.ts
new file mode 100644
index 0000000..aa87137
--- /dev/null
+++ b/src/Factories/EnumFactory.ts
@@ -0,0 +1,36 @@
+import ts from 'typescript';
+import { Enum } from '../Components/Enum';
+import { IComponentComposite } from '../Models/IComponentComposite';
+import { EnumValueFactory } from './EnumValueFactory';
+
+export namespace EnumFactory {
+    export function create(enumSymbol: ts.Symbol): Enum {
+        const result: Enum = new Enum(enumSymbol.getName());
+
+        if (enumSymbol.exports !== undefined) {
+            result.values = serializeEnumProperties(enumSymbol.exports);
+        }
+
+        return result;
+    }
+
+    function serializeEnumProperties(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>): IComponentComposite[] {
+        const result: IComponentComposite[] = [];
+
+        if (memberSymbols !== undefined) {
+            memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
+                const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
+                if (memberDeclarations === undefined) {
+                    return;
+                }
+                memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
+                    if (memberDeclaration.kind === ts.SyntaxKind.EnumMember) {
+                        result.push(EnumValueFactory.create(memberSymbol));
+                    }
+                });
+            });
+        }
+
+        return result;
+    }
+}
diff --git a/src/Factories/EnumValueFactory.ts b/src/Factories/EnumValueFactory.ts
new file mode 100644
index 0000000..d65bdc1
--- /dev/null
+++ b/src/Factories/EnumValueFactory.ts
@@ -0,0 +1,8 @@
+import ts from 'typescript';
+import { EnumValue } from '../Components/EnumValue';
+
+export namespace EnumValueFactory {
+    export function create(signature: ts.Symbol): EnumValue {
+        return new EnumValue(signature.getName());
+    }
+}
diff --git a/src/Factories/FileFactory.ts b/src/Factories/FileFactory.ts
new file mode 100644
index 0000000..b934ee7
--- /dev/null
+++ b/src/Factories/FileFactory.ts
@@ -0,0 +1,12 @@
+import ts from 'typescript';
+import { File } from '../Components/File';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace FileFactory {
+    export function create(sourceFile: ts.Node, checker: ts.TypeChecker): File {
+        const file: File = new File();
+        file.parts = ComponentFactory.create(sourceFile, checker);
+
+        return file;
+    }
+}
diff --git a/src/Factories/InterfaceFactory.ts b/src/Factories/InterfaceFactory.ts
new file mode 100644
index 0000000..490112a
--- /dev/null
+++ b/src/Factories/InterfaceFactory.ts
@@ -0,0 +1,29 @@
+import ts from 'typescript';
+import { Interface } from '../Components/Interface';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace InterfaceFactory {
+    export function create(interfaceSymbol: ts.Symbol, checker: ts.TypeChecker): Interface {
+        const result: Interface = new Interface(interfaceSymbol.getName());
+
+        const declaration: ts.InterfaceDeclaration[] | undefined = <ts.InterfaceDeclaration[] | undefined>interfaceSymbol.getDeclarations();
+
+        if (interfaceSymbol.members !== undefined) {
+            result.members = ComponentFactory.serializeMethods(interfaceSymbol.members, checker);
+            result.typeParameters = ComponentFactory.serializeTypeParameters(interfaceSymbol.members, checker);
+        }
+
+        if (declaration !== undefined && declaration.length > 0) {
+            const heritageClauses: ts.NodeArray<ts.HeritageClause> | undefined = declaration[declaration.length - 1].heritageClauses;
+            if (heritageClauses !== undefined) {
+                heritageClauses.forEach((heritageClause: ts.HeritageClause): void => {
+                    if (heritageClause.token === ts.SyntaxKind.ExtendsKeyword) {
+                        result.extendsInterface = [ComponentFactory.getExtendsHeritageClauseName(heritageClause)];
+                    }
+                });
+            }
+        }
+
+        return result;
+    }
+}
diff --git a/src/Factories/MethodFactory.ts b/src/Factories/MethodFactory.ts
new file mode 100644
index 0000000..710253e
--- /dev/null
+++ b/src/Factories/MethodFactory.ts
@@ -0,0 +1,23 @@
+import ts from 'typescript';
+import { Method } from '../Components/Method';
+import { Parameter } from '../Components/Parameter';
+import { ComponentFactory } from './ComponentFactory';
+import { ParameterFactory } from './ParameterFactory';
+
+export namespace MethodFactory {
+    export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): Method {
+        const result: Method = new Method(signature.getName());
+        result.modifier = ComponentFactory.getMemberModifier(namedDeclaration);
+        result.isAbstract = ComponentFactory.isAbstract(namedDeclaration);
+        result.isOptional = ComponentFactory.isOptional(<ts.MethodDeclaration>namedDeclaration);
+        result.isStatic = ComponentFactory.isStatic(namedDeclaration);
+        const methodSignature: ts.Signature | undefined = checker.getSignatureFromDeclaration(<ts.MethodDeclaration>namedDeclaration);
+        if (methodSignature !== undefined) {
+            result.returnType = checker.typeToString(methodSignature.getReturnType());
+            result.parameters = methodSignature.parameters
+                .map((parameter: ts.Symbol): Parameter => ParameterFactory.create(parameter, checker));
+        }
+
+        return result;
+    }
+}
diff --git a/src/Factories/NamespaceFactory.ts b/src/Factories/NamespaceFactory.ts
new file mode 100644
index 0000000..198e004
--- /dev/null
+++ b/src/Factories/NamespaceFactory.ts
@@ -0,0 +1,25 @@
+import ts from 'typescript';
+import { Namespace } from '../Components/Namespace';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace NamespaceFactory {
+    export function create(namespaceSymbol: ts.Symbol, checker: ts.TypeChecker): Namespace {
+        const result: Namespace = new Namespace(namespaceSymbol.getName());
+        const namespaceDeclarations: ts.NamespaceDeclaration[] | undefined =
+            <ts.NamespaceDeclaration[] | undefined>namespaceSymbol.getDeclarations();
+
+        if (namespaceDeclarations === undefined) {
+            return result;
+        }
+
+        const declaration: ts.NamespaceDeclaration | undefined = namespaceDeclarations[namespaceDeclarations.length - 1];
+
+        if (declaration === undefined || (<ts.ModuleBlock>declaration.body).statements === undefined) {
+            return result;
+        }
+
+        result.parts = ComponentFactory.create(declaration.body, checker);
+
+        return result;
+    }
+}
diff --git a/src/Factories/ParameterFactory.ts b/src/Factories/ParameterFactory.ts
new file mode 100644
index 0000000..5ccd0f1
--- /dev/null
+++ b/src/Factories/ParameterFactory.ts
@@ -0,0 +1,17 @@
+import ts from 'typescript';
+import { Parameter } from '../Components/Parameter';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace ParameterFactory {
+    export function create(parameterSymbol: ts.Symbol, checker: ts.TypeChecker): Parameter {
+        const result: Parameter = new Parameter(parameterSymbol.getName());
+        const declarations: ts.ParameterDeclaration[] | undefined = <ts.ParameterDeclaration[]>parameterSymbol.getDeclarations();
+        if (declarations !== undefined) {
+            result.hasInitializer = ComponentFactory.hasInitializer(declarations[0]);
+            result.isOptional = ComponentFactory.isOptional(declarations[0]);
+        }
+        result.parameterType = checker.typeToString(checker.getTypeOfSymbolAtLocation(parameterSymbol, parameterSymbol.valueDeclaration));
+
+        return result;
+    }
+}
diff --git a/src/Factories/PropertyFactory.ts b/src/Factories/PropertyFactory.ts
new file mode 100644
index 0000000..8e4110b
--- /dev/null
+++ b/src/Factories/PropertyFactory.ts
@@ -0,0 +1,15 @@
+import ts from 'typescript';
+import { Property } from '../Components/Property';
+import { ComponentFactory } from './ComponentFactory';
+
+export namespace PropertyFactory {
+    export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): Property {
+        const result: Property = new Property(signature.getName());
+        result.modifier = ComponentFactory.getMemberModifier(namedDeclaration);
+        result.isOptional = ComponentFactory.isOptional(<ts.PropertyDeclaration>namedDeclaration);
+        result.isStatic = ComponentFactory.isStatic(namedDeclaration);
+        result.returnType = checker.typeToString(checker.getTypeOfSymbolAtLocation(signature, signature.valueDeclaration));
+
+        return result;
+    }
+}
diff --git a/src/Factories/TypeParameterFactory.ts b/src/Factories/TypeParameterFactory.ts
new file mode 100644
index 0000000..bdbdad9
--- /dev/null
+++ b/src/Factories/TypeParameterFactory.ts
@@ -0,0 +1,22 @@
+import ts from 'typescript';
+import { TypeParameter } from '../Components/TypeParameter';
+
+export namespace TypeParameterFactory {
+    export function getConstraint(memberDeclaration: ts.Declaration, checker: ts.TypeChecker): string | undefined {
+        const effectiveConstraint: ts.TypeNode | undefined =
+            ts.getEffectiveConstraintOfTypeParameter(<ts.TypeParameterDeclaration>memberDeclaration);
+
+        if (effectiveConstraint === undefined) {
+            return;
+        }
+
+        return checker.typeToString(checker.getTypeFromTypeNode(effectiveConstraint));
+    }
+
+    export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): TypeParameter {
+        const result: TypeParameter = new TypeParameter(signature.getName());
+        result.constraint = getConstraint(namedDeclaration, checker);
+
+        return result;
+    }
+}
diff --git a/src/components/ComponentKind.ts b/src/Models/ComponentKind.ts
similarity index 99%
rename from src/components/ComponentKind.ts
rename to src/Models/ComponentKind.ts
index a7f1f1c..71b7634 100644
--- a/src/components/ComponentKind.ts
+++ b/src/Models/ComponentKind.ts
@@ -1,4 +1,3 @@
-
 export enum ComponentKind {
     CLASS,
     ENUM,
diff --git a/src/ICommandOptions.ts b/src/Models/ICommandOptions.ts
similarity index 100%
rename from src/ICommandOptions.ts
rename to src/Models/ICommandOptions.ts
diff --git a/src/components/IComponentComposite.ts b/src/Models/IComponentComposite.ts
similarity index 61%
rename from src/components/IComponentComposite.ts
rename to src/Models/IComponentComposite.ts
index 8d0ef41..97eab78 100644
--- a/src/components/IComponentComposite.ts
+++ b/src/Models/IComponentComposite.ts
@@ -1,8 +1,7 @@
-
 import { ComponentKind } from './ComponentKind';
 
 export interface IComponentComposite {
-    componentKind: ComponentKind;
-    name: string;
+    readonly componentKind: ComponentKind;
+    readonly name: string;
     toPUML(): string;
 }
diff --git a/src/components/Modifier.ts b/src/Models/Modifier.ts
similarity index 98%
rename from src/components/Modifier.ts
rename to src/Models/Modifier.ts
index e0b71e2..ef99f10 100644
--- a/src/components/Modifier.ts
+++ b/src/Models/Modifier.ts
@@ -1,2 +1 @@
-
 export type Modifier = 'public' | 'private' | 'protected';
diff --git a/src/components/ClassFactory.ts b/src/components/ClassFactory.ts
deleted file mode 100644
index 35b33fe..0000000
--- a/src/components/ClassFactory.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-
-import ts from 'typescript';
-import { Class } from './Class';
-import * as ComponentFactory from './ComponentFactory';
-import { IComponentComposite } from './IComponentComposite';
-
-export function create(classSymbol: ts.Symbol, checker: ts.TypeChecker): IComponentComposite {
-    const result: Class = new Class();
-    const classDeclaration: ts.ClassDeclaration[] | undefined = <ts.ClassDeclaration[] | undefined>classSymbol.getDeclarations();
-
-    result.name = classSymbol.getName();
-
-    if (classDeclaration !== undefined && classDeclaration.length > 0) {
-        result.isStatic = ComponentFactory.isStatic(classDeclaration[classDeclaration.length - 1]);
-        result.isAbstract = ComponentFactory.isAbstract(classDeclaration[classDeclaration.length - 1]);
-    }
-
-    if (classSymbol.members !== undefined) {
-        result.members = ComponentFactory.serializeMethods(classSymbol.members, checker);
-        result.typeParameters = ComponentFactory.serializeTypeParameters(classSymbol.members, checker);
-    }
-
-    if (classSymbol.exports !== undefined) {
-        result.members = result.members.concat(ComponentFactory.serializeMethods(classSymbol.exports, checker));
-    }
-
-    if (classSymbol.globalExports !== undefined) {
-        result.members = result.members.concat(ComponentFactory.serializeMethods(classSymbol.globalExports, checker));
-    }
-
-    if (classDeclaration !== undefined && classDeclaration.length > 0) {
-        const heritageClauses: ts.NodeArray<ts.HeritageClause> | undefined = classDeclaration[classDeclaration.length - 1].heritageClauses;
-
-        if (heritageClauses !== undefined) {
-            heritageClauses.forEach((heritageClause: ts.HeritageClause): void => {
-                if (heritageClause.token === ts.SyntaxKind.ExtendsKeyword) {
-                    result.extendsClass = ComponentFactory.getExtendsHeritageClauseName(heritageClause);
-                } else if (heritageClause.token === ts.SyntaxKind.ImplementsKeyword) {
-                    result.implementsInterfaces = ComponentFactory.getImplementsHeritageClauseNames(heritageClause);
-                }
-            });
-        }
-    }
-
-    return result;
-}
diff --git a/src/components/ComponentFactory.ts b/src/components/ComponentFactory.ts
deleted file mode 100644
index 29791ed..0000000
--- a/src/components/ComponentFactory.ts
+++ /dev/null
@@ -1,155 +0,0 @@
-
-import ts from 'typescript';
-import { Method } from './Method';
-import * as MethodFactory from './MethodFactory';
-import { Modifier } from './Modifier';
-import { Property } from './Property';
-import * as PropertyFactory from './PropertyFactory';
-import { TypeParameter } from './TypeParameter';
-import * as TypeParameterFactory from './TypeParameterFactory';
-
-interface IMightBeOptional {
-    questionToken?: ts.Token<ts.SyntaxKind.QuestionToken>;
-}
-
-export function isNodeExported(node: ts.Node): boolean {
-
-    // tslint:disable-next-line no-bitwise
-    return (node.flags & ts.ModifierFlags.Export) !== 0 ||
-        node.parent.kind === ts.SyntaxKind.SourceFile ||
-        node.parent.kind === ts.SyntaxKind.ModuleBlock;
-}
-
-export function getModifier(modifiers: ts.NodeArray<ts.Modifier>): Modifier {
-    for (const modifier of modifiers) {
-        if (modifier.kind === ts.SyntaxKind.PrivateKeyword) {
-            return 'private';
-        }
-        if (modifier.kind === ts.SyntaxKind.PublicKeyword) {
-            return 'public';
-        }
-        if (modifier.kind === ts.SyntaxKind.ProtectedKeyword) {
-            return 'protected';
-        }
-    }
-
-    return 'public';
-}
-
-export function getExtendsHeritageClauseName(heritageClause: ts.HeritageClause): string {
-    return (<ts.Identifier>heritageClause.types[0].expression).text;
-}
-
-export function getInterfaceName(nodeObject: ts.ExpressionWithTypeArguments): string {
-    return (<ts.Identifier>nodeObject.expression).text;
-}
-
-export function getImplementsHeritageClauseNames(heritageClause: ts.HeritageClause): string[] {
-    return heritageClause.types.map(getInterfaceName);
-}
-
-export function isMethod(declaration: ts.NamedDeclaration): boolean {
-    return declaration.kind === ts.SyntaxKind.MethodDeclaration ||
-           declaration.kind === ts.SyntaxKind.MethodSignature;
-}
-
-export function isProperty(declaration: ts.NamedDeclaration): boolean {
-    return declaration.kind === ts.SyntaxKind.PropertySignature ||
-           declaration.kind === ts.SyntaxKind.PropertyDeclaration ||
-           declaration.kind === ts.SyntaxKind.GetAccessor ||
-           declaration.kind === ts.SyntaxKind.SetAccessor ||
-           declaration.kind === ts.SyntaxKind.Parameter;
-}
-
-export function isTypeParameter(declaration: ts.NamedDeclaration): boolean {
-    return declaration.kind === ts.SyntaxKind.TypeParameter;
-}
-
-export function getMemberModifier(memberDeclaration: ts.Declaration): 'public' | 'private' | 'protected' {
-    const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
-
-    if (memberModifiers === undefined) {
-        return 'public';
-    }
-
-    return getModifier(memberModifiers);
-}
-
-export function isAbstract(memberDeclaration: ts.Declaration): boolean {
-
-    const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
-
-    if (memberModifiers !== undefined) {
-        for (const memberModifier of memberModifiers) {
-            if (memberModifier.kind === ts.SyntaxKind.AbstractKeyword) {
-                return true;
-            }
-        }
-    }
-
-    return false;
-}
-
-export function isStatic(memberDeclaration: ts.Declaration): boolean {
-    const memberModifiers: ts.NodeArray<ts.Modifier> | undefined = memberDeclaration.modifiers;
-
-    if (memberModifiers !== undefined) {
-        for (const memberModifier of memberModifiers) {
-            if (memberModifier.kind === ts.SyntaxKind.StaticKeyword) {
-                return true;
-            }
-        }
-    }
-
-    return false;
-}
-
-export function serializeMethods(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>, checker: ts.TypeChecker): (Property | Method)[] {
-    const result: (Property | Method)[] = [];
-
-    if (memberSymbols !== undefined) {
-        memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
-            const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
-            if (memberDeclarations === undefined) {
-                return;
-            }
-            memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
-                if (isMethod(memberDeclaration)) {
-                    result.push(MethodFactory.create(memberSymbol, memberDeclaration, checker));
-                } else if (isProperty(memberDeclaration)) {
-                    result.push(PropertyFactory.create(memberSymbol, memberDeclaration, checker));
-                }
-            });
-        });
-    }
-
-    return result;
-}
-
-export function serializeTypeParameters(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>, checker: ts.TypeChecker): TypeParameter[] {
-    const result: TypeParameter[] = [];
-
-    if (memberSymbols !== undefined) {
-        memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
-            const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
-            if (memberDeclarations === undefined) {
-                return;
-            }
-            memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
-                if (isTypeParameter(memberDeclaration)) {
-                    result.push(TypeParameterFactory.create(memberSymbol, memberDeclaration, checker));
-                }
-            });
-        });
-    }
-
-    return result;
-}
-
-export function hasInitializer(declaration: ts.ParameterDeclaration): boolean {
-    return declaration.initializer !== undefined;
-}
-
-export function isOptional(declaration: IMightBeOptional): boolean {
-    return declaration.questionToken !== undefined;
-}
diff --git a/src/components/Enum.ts b/src/components/Enum.ts
deleted file mode 100644
index 4a67e4d..0000000
--- a/src/components/Enum.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-
-import * as os from 'os';
-import { ComponentKind } from './ComponentKind';
-import { EnumValue } from './EnumValue';
-import { IComponentComposite } from './IComponentComposite';
-
-/**
- * Represents the metadata for an Enum within a typescript file.
- */
-export class Enum implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.ENUM;
-    public name: string = '';
-    public values: EnumValue[] = [];
-    public toPUML(): string {
-        const result: string[] = [];
-        result.push(`enum ${this.name} {`);
-        this.values.forEach((enumValue: EnumValue): void => {
-            result.push(`    ${enumValue.name}`);
-        });
-        result.push('}');
-
-        return result.join(os.EOL);
-    }
-}
diff --git a/src/components/EnumFactory.ts b/src/components/EnumFactory.ts
deleted file mode 100644
index ad5a932..0000000
--- a/src/components/EnumFactory.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-
-import ts from 'typescript';
-import * as ComponentFactory from './ComponentFactory';
-import { Enum } from './Enum';
-import { EnumValue } from './EnumValue';
-import * as EnumValueFactory from './EnumValueFactory';
-import { IComponentComposite } from './IComponentComposite';
-
-function serializeEnumProperties(memberSymbols: ts.UnderscoreEscapedMap<ts.Symbol>, checker: ts.TypeChecker): EnumValue[] {
-    const result: EnumValue[] = [];
-
-    if (memberSymbols !== undefined) {
-        memberSymbols.forEach((memberSymbol: ts.Symbol): void => {
-            const memberDeclarations: ts.NamedDeclaration[] | undefined = memberSymbol.getDeclarations();
-            if (memberDeclarations === undefined) {
-                return;
-            }
-            memberDeclarations.forEach((memberDeclaration: ts.NamedDeclaration): void => {
-                if (memberDeclaration.kind === ts.SyntaxKind.EnumMember) {
-                    result.push(EnumValueFactory.create(memberSymbol, memberDeclaration, checker));
-                }
-            });
-        });
-    }
-
-    return result;
-}
-
-export function create(enumSymbol: ts.Symbol, checker: ts.TypeChecker): IComponentComposite {
-    const result: Enum = new Enum();
-    result.name = enumSymbol.getName();
-
-    const declaration: ts.EnumDeclaration[] | undefined = <ts.EnumDeclaration[] | undefined>enumSymbol.getDeclarations();
-
-    if (enumSymbol.exports !== undefined) {
-        result.values = serializeEnumProperties(enumSymbol.exports, checker);
-    }
-
-    return result;
-}
diff --git a/src/components/EnumValue.ts b/src/components/EnumValue.ts
deleted file mode 100644
index b1ce8e9..0000000
--- a/src/components/EnumValue.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-
-/**
- * Represents the metadata for the value or member of an enum within typescript
- */
-export class EnumValue {
-    public name: string = '';
-    public value: string | undefined;
-}
diff --git a/src/components/EnumValueFactory.ts b/src/components/EnumValueFactory.ts
deleted file mode 100644
index d15bcbd..0000000
--- a/src/components/EnumValueFactory.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-
-import ts from 'typescript';
-import { EnumValue } from './EnumValue';
-
-export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): EnumValue {
-    const result: EnumValue = new EnumValue();
-    result.name = signature.getName();
-
-    return result;
-}
diff --git a/src/components/FileFactory.ts b/src/components/FileFactory.ts
deleted file mode 100644
index 12bc25e..0000000
--- a/src/components/FileFactory.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-
-import ts from 'typescript';
-import * as ClassFactory from './ClassFactory';
-import * as ComponentFactory from './ComponentFactory';
-import * as EnumFactory from './EnumFactory';
-import { File } from './File';
-import { IComponentComposite } from './IComponentComposite';
-import * as InterfaceFactory from './InterfaceFactory';
-import * as NamespaceFactory from './NamespaceFactory';
-
-export function create(sourceFile: ts.Node, checker: ts.TypeChecker): IComponentComposite {
-
-    const file: File = new File();
-
-    // Walk the tree to search for classes
-    ts.forEachChild(sourceFile, (node: ts.Node) => {
-
-        // Only consider exported nodes
-        if (!ComponentFactory.isNodeExported(node)) {
-            return;
-        }
-
-        if (node.kind === ts.SyntaxKind.ClassDeclaration) {
-            const currentNode: ts.ClassLikeDeclarationBase = <ts.ClassLikeDeclarationBase>node;
-            if (currentNode.name === undefined) {
-                return;
-            }
-            // This is a top level class, get its symbol
-            const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-            if (symbol === undefined) {
-                return;
-            }
-            file.parts.push(ClassFactory.create(symbol, checker));
-
-            // No need to walk any further, class expressions/inner declarations
-            // cannot be exported
-        } else if (node.kind === ts.SyntaxKind.InterfaceDeclaration) {
-            const currentNode: ts.InterfaceDeclaration = <ts.InterfaceDeclaration>node;
-            const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-            if (symbol === undefined) {
-                return;
-            }
-            file.parts.push(InterfaceFactory.create(symbol, checker));
-        } else if (node.kind === ts.SyntaxKind.ModuleDeclaration) {
-            const currentNode: ts.NamespaceDeclaration = <ts.NamespaceDeclaration>node;
-            const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-            if (symbol === undefined) {
-                return;
-            }
-            file.parts.push(NamespaceFactory.create(symbol, checker));
-        } else if (node.kind === ts.SyntaxKind.EnumDeclaration) {
-            const currentNode: ts.EnumDeclaration = <ts.EnumDeclaration>node;
-            const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-            if (symbol === undefined) {
-                return;
-            }
-            file.parts.push(EnumFactory.create(symbol, checker));
-
-            return;
-        }
-    });
-
-    return file;
-}
diff --git a/src/components/Interface.ts b/src/components/Interface.ts
deleted file mode 100644
index fdf7a42..0000000
--- a/src/components/Interface.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-
-import * as os from 'os';
-import { ComponentKind } from './ComponentKind';
-import { IComponentComposite } from './IComponentComposite';
-import { Method } from './Method';
-import { Property } from './Property';
-import { TypeParameter } from './TypeParameter';
-
-/**
- * Represents the metadata for an interface within typescript
- */
-export class Interface implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.INTERFACE;
-    public name: string = '';
-    public members: (Method | Property)[] = [];
-    public extends: string[] = [];
-    public typeParameters: TypeParameter[] = [];
-    public toPUML(): string {
-        const result: string[] = [];
-        const firstLine: string[] = [];
-        firstLine.push(`interface ${this.name}`);
-        if (this.typeParameters.length > 0) {
-            firstLine.push('<');
-            firstLine.push(this.typeParameters
-                                        .map((typeParameter: TypeParameter): string => typeParameter.toPUML())
-                                        .join(', '));
-            firstLine.push('>');
-        }
-        if (this.extends.length > 0) {
-            firstLine.push(` extends ${this.extends.join(', ')}`);
-        }
-        firstLine.push(' {');
-        result.push(firstLine.join(''));
-        this.members.forEach((member: IComponentComposite): void => {
-            result.push(`    ${member.toPUML()}`);
-        });
-        result.push('}');
-
-        return result.join(os.EOL);
-    }
-}
diff --git a/src/components/InterfaceFactory.ts b/src/components/InterfaceFactory.ts
deleted file mode 100644
index dbd9dac..0000000
--- a/src/components/InterfaceFactory.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-
-import ts from 'typescript';
-import * as ComponentFactory from './ComponentFactory';
-import { IComponentComposite } from './IComponentComposite';
-import { Interface } from './Interface';
-
-export function create(interfaceSymbol: ts.Symbol, checker: ts.TypeChecker): IComponentComposite {
-    const result: Interface = new Interface();
-    result.name = interfaceSymbol.getName();
-
-    const declaration: ts.InterfaceDeclaration[] | undefined = <ts.InterfaceDeclaration[] | undefined>interfaceSymbol.getDeclarations();
-
-    if (interfaceSymbol.members !== undefined) {
-        result.members = ComponentFactory.serializeMethods(interfaceSymbol.members, checker);
-        result.typeParameters = ComponentFactory.serializeTypeParameters(interfaceSymbol.members, checker);
-    }
-
-    if (declaration !== undefined && declaration.length > 0) {
-        const heritageClauses: ts.NodeArray<ts.HeritageClause> | undefined = declaration[declaration.length - 1].heritageClauses;
-        if (heritageClauses !== undefined) {
-            heritageClauses.forEach((heritageClause: ts.HeritageClause): void => {
-                if (heritageClause.token === ts.SyntaxKind.ExtendsKeyword) {
-                    result.extends = [ComponentFactory.getExtendsHeritageClauseName(heritageClause)];
-                }
-            });
-        }
-    }
-
-    return result;
-}
diff --git a/src/components/MethodFactory.ts b/src/components/MethodFactory.ts
deleted file mode 100644
index 5cd8e38..0000000
--- a/src/components/MethodFactory.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-
-import ts from 'typescript';
-import * as ComponentFactory from './ComponentFactory';
-import { Method } from './Method';
-import { Parameter } from './Parameter';
-import * as ParameterFactory from './ParameterFactory';
-
-export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): Method {
-    const result: Method = new Method();
-    result.name = signature.getName();
-    result.modifier = ComponentFactory.getMemberModifier(namedDeclaration);
-    result.isAbstract = ComponentFactory.isAbstract(namedDeclaration);
-    result.isOptional = ComponentFactory.isOptional(<ts.MethodDeclaration>namedDeclaration);
-    result.isStatic = ComponentFactory.isStatic(namedDeclaration);
-    const methodSignature: ts.Signature | undefined = checker.getSignatureFromDeclaration(<ts.MethodDeclaration>namedDeclaration);
-    if (methodSignature !== undefined) {
-        result.returnType = checker.typeToString(methodSignature.getReturnType());
-        result.parameters = methodSignature.parameters
-                                .map((parameter: ts.Symbol): Parameter => ParameterFactory.create(parameter, checker));
-    }
-
-    return result;
-}
diff --git a/src/components/Namespace.ts b/src/components/Namespace.ts
deleted file mode 100644
index bab5542..0000000
--- a/src/components/Namespace.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-
-import * as os from 'os';
-import { Class } from './Class';
-import { ComponentKind } from './ComponentKind';
-import { Enum } from './Enum';
-import { IComponentComposite } from './IComponentComposite';
-import { Interface } from './Interface';
-import { Method } from './Method';
-import { Property } from './Property';
-
-/**
- * Represents the metadata for a namespace within typescript
- */
-export class Namespace implements IComponentComposite {
-    public name: string = '';
-    public componentKind: ComponentKind = ComponentKind.NAMESPACE;
-    public parts: IComponentComposite[] = [];
-    public toPUML(): string {
-        const result: string[] = [];
-        result.push(`namespace ${this.name} {`);
-        this.parts.forEach((part: IComponentComposite): void => {
-            result.push(part.toPUML());
-        });
-        result.push(`}`);
-
-        return result.join(os.EOL);
-    }
-}
diff --git a/src/components/NamespaceFactory.ts b/src/components/NamespaceFactory.ts
deleted file mode 100644
index 8ecafa3..0000000
--- a/src/components/NamespaceFactory.ts
+++ /dev/null
@@ -1,74 +0,0 @@
-
-import ts from 'typescript';
-import * as ClassFactory from './ClassFactory';
-import * as ComponentFactory from './ComponentFactory';
-import * as EnumFactory from './EnumFactory';
-import { IComponentComposite } from './IComponentComposite';
-import * as InterfaceFactory from './InterfaceFactory';
-import { Namespace } from './Namespace';
-import * as NamespaceFactory from './NamespaceFactory';
-
-export function create(namespaceSymbol: ts.Symbol, checker: ts.TypeChecker): IComponentComposite {
-    const result: Namespace = new Namespace();
-    const namespaceDeclarations: ts.NamespaceDeclaration[] | undefined =
-        <ts.NamespaceDeclaration[] | undefined>namespaceSymbol.getDeclarations();
-
-    result.name = namespaceSymbol.getName();
-
-    if (namespaceDeclarations === undefined) {
-        return result;
-    }
-
-    const declaration: ts.NamespaceDeclaration | undefined = namespaceDeclarations[namespaceDeclarations.length - 1];
-
-    if (declaration !== undefined && (<ts.ModuleBlock>declaration.body).statements !== undefined) {
-        ts.forEachChild(declaration.body, (node: ts.Node) => {
-
-            // Only consider exported nodes
-            if (!ComponentFactory.isNodeExported(node)) {
-                return;
-            }
-
-            if (node.kind === ts.SyntaxKind.ClassDeclaration) {
-                const currentNode: ts.ClassLikeDeclarationBase = <ts.ClassLikeDeclarationBase>node;
-                if (currentNode.name === undefined) {
-                    return;
-                }
-                // This is a top level class, get its symbol
-                const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-                if (symbol === undefined) {
-                    return;
-                }
-                result.parts.push(ClassFactory.create(symbol, checker));
-
-                // No need to walk any further, class expressions/inner declarations
-                // cannot be exported
-            } else if (node.kind === ts.SyntaxKind.InterfaceDeclaration) {
-                const currentNode: ts.InterfaceDeclaration = <ts.InterfaceDeclaration>node;
-                const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-                if (symbol === undefined) {
-                    return;
-                }
-                result.parts.push(InterfaceFactory.create(symbol, checker));
-            } else if (node.kind === ts.SyntaxKind.ModuleDeclaration) {
-                const currentNode: ts.NamespaceDeclaration = <ts.NamespaceDeclaration>node;
-                const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-                if (symbol === undefined) {
-                    return;
-                }
-                result.parts.push(NamespaceFactory.create(symbol, checker));
-            } else if (node.kind === ts.SyntaxKind.EnumDeclaration) {
-                const currentNode: ts.EnumDeclaration = <ts.EnumDeclaration>node;
-                const symbol: ts.Symbol | undefined = checker.getSymbolAtLocation(currentNode.name);
-                if (symbol === undefined) {
-                    return;
-                }
-                result.parts.push(EnumFactory.create(symbol, checker));
-            } else {
-                console.warn('Unsupported namespace kind', node.kind);
-            }
-        });
-    }
-
-    return result;
-}
diff --git a/src/components/Parameter.ts b/src/components/Parameter.ts
deleted file mode 100644
index 4a34bc3..0000000
--- a/src/components/Parameter.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-
-import { ComponentKind } from './ComponentKind';
-import { IComponentComposite } from './IComponentComposite';
-
-/**
- * Represents the metadata for a parameter within typescript
- */
-export class Parameter implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.PARAMETER;
-    public name: string = '';
-    public hasInitializer: boolean = false;
-    public isOptional: boolean = false;
-    public type: string = '';
-    public toPUML(): string {
-        return `${this.name}${this.isOptional || this.hasInitializer ? '?' : ''}: ${this.type}`;
-    }
-}
diff --git a/src/components/ParameterFactory.ts b/src/components/ParameterFactory.ts
deleted file mode 100644
index 44aee20..0000000
--- a/src/components/ParameterFactory.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-
-import ts from 'typescript';
-import * as ComponentFactory from './ComponentFactory';
-import { Parameter } from './Parameter';
-
-export function create(symbol: ts.Symbol, checker: ts.TypeChecker): Parameter {
-    const result: Parameter = new Parameter();
-    const declarations: ts.ParameterDeclaration[] | undefined = <ts.ParameterDeclaration[]>symbol.getDeclarations();
-    if (declarations !== undefined) {
-        result.hasInitializer = ComponentFactory.hasInitializer(declarations[0]);
-        result.isOptional = ComponentFactory.isOptional(declarations[0]);
-    }
-    result.name = symbol.getName();
-    result.type = checker.typeToString(checker.getTypeOfSymbolAtLocation(symbol, symbol.valueDeclaration));
-
-    return result;
-}
diff --git a/src/components/Property.ts b/src/components/Property.ts
deleted file mode 100644
index 1947079..0000000
--- a/src/components/Property.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-
-import { ComponentKind } from './ComponentKind';
-import { IComponentComposite } from './IComponentComposite';
-import { Modifier } from './Modifier';
-
-/**
- * Represents the metadata for a property within typescript
- */
-export class Property implements IComponentComposite {
-    public componentKind: ComponentKind = ComponentKind.PROPERTY;
-    public name: string = '';
-    public modifier: Modifier = 'public';
-    public returnType: string = '';
-    public isOptional: boolean = false;
-    public isStatic: boolean = false;
-    public toPUML(): string {
-        return `${{ public: '+', private: '-', protected: '#' }[this.modifier]}${(this.isStatic ? '{static} ' : '')
-                }${this.name}${(this.isOptional ? '?' : '')}: ${this.returnType}`;
-    }
-}
diff --git a/src/components/PropertyFactory.ts b/src/components/PropertyFactory.ts
deleted file mode 100644
index 023d995..0000000
--- a/src/components/PropertyFactory.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-
-import ts from 'typescript';
-import * as ComponentFactory from './ComponentFactory';
-import { Property } from './Property';
-
-export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): Property {
-    const result: Property = new Property();
-    result.name = signature.getName();
-    result.modifier = ComponentFactory.getMemberModifier(namedDeclaration);
-    result.isOptional = ComponentFactory.isOptional(<ts.PropertyDeclaration>namedDeclaration);
-    result.isStatic = ComponentFactory.isStatic(namedDeclaration);
-    result.returnType = checker.typeToString(checker.getTypeOfSymbolAtLocation(signature, signature.valueDeclaration));
-
-    return result;
-}
diff --git a/src/components/TypeParameter.ts b/src/components/TypeParameter.ts
deleted file mode 100644
index d5c3989..0000000
--- a/src/components/TypeParameter.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-
-import { IComponentComposite } from './IComponentComposite';
-
-/**
- * Represents the metadata for a type parameter within typescript
- */
-export class TypeParameter {
-    public name: string = '';
-    public constraint: string | undefined;
-    public toPUML(): string {
-        return `${this.name}${(this.constraint !== undefined ? ` extends ${this.constraint}` : '')}`;
-    }
-}
diff --git a/src/components/TypeParameterFactory.ts b/src/components/TypeParameterFactory.ts
deleted file mode 100644
index 18edba1..0000000
--- a/src/components/TypeParameterFactory.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-
-import ts from 'typescript';
-import { TypeParameter } from './TypeParameter';
-
-export function getConstraint(memberDeclaration: ts.Declaration, checker: ts.TypeChecker): string | undefined {
-    const effectiveConstraint: ts.TypeNode | undefined =
-        ts.getEffectiveConstraintOfTypeParameter(<ts.TypeParameterDeclaration>memberDeclaration);
-
-    if (effectiveConstraint === undefined) {
-        return;
-    }
-
-    return checker.typeToString(checker.getTypeFromTypeNode(effectiveConstraint));
-}
-
-export function create(signature: ts.Symbol, namedDeclaration: ts.NamedDeclaration, checker: ts.TypeChecker): TypeParameter {
-    const result: TypeParameter = new TypeParameter();
-    result.name = signature.getName();
-    result.constraint = getConstraint(namedDeclaration, checker);
-
-    return result;
-}
diff --git a/src/convertToPlant.ts b/src/convertToPlant.ts
deleted file mode 100644
index ef55174..0000000
--- a/src/convertToPlant.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-import * as os from 'os';
-import { Class } from './components/Class';
-import { ComponentKind } from './components/ComponentKind';
-import { Enum } from './components/Enum';
-import { EnumValue } from './components/EnumValue';
-import { File } from './components/File';
-import { IComponentComposite } from './components/IComponentComposite';
-import { Interface } from './components/Interface';
-import { Method } from './components/Method';
-import { Namespace } from './components/Namespace';
-import { Parameter } from './components/Parameter';
-import { Property } from './components/Property';
-import { TypeParameter } from './components/TypeParameter';
-
-import { ICommandOptions } from './ICommandOptions';
-
-const COMPOSITION_LINE: string = '*--';
-const REGEX_ONLY_TYPE_NAMES: RegExp = /\w+/g;
-
-export function convertToPlant(files: IComponentComposite[], options: ICommandOptions = {
-    compositions: false,
-    onlyInterfaces: false
-}): string {
-
-    const lines: string[] = [];
-    const compositions: string[] = [];
-
-    if (options.onlyInterfaces) {
-        for (const file of files) {
-            if (file.componentKind === ComponentKind.FILE) {
-                (<File>file).parts = (<File>file).parts
-                                        .filter((part: IComponentComposite): boolean => part.componentKind === ComponentKind.INTERFACE);
-            }
-        }
-    }
-
-    lines.push('@startuml');
-
-    files.forEach((file: IComponentComposite): void => {
-        const conversion: string = file.toPUML();
-        if (conversion !== '') {
-            lines.push(conversion);
-        }
-    });
-
-    if (options.compositions) {
-        const mappedTypes: {[x: string]: boolean} = {};
-        const outputConstraints: {[x: string]: boolean} = {};
-        files.forEach((file: IComponentComposite): void => {
-            (<File>file).parts.forEach((part: IComponentComposite): void => {
-                if (part.componentKind === ComponentKind.CLASS ||
-                    part.componentKind === ComponentKind.INTERFACE ||
-                    part.componentKind === ComponentKind.ENUM
-                ) {
-                    mappedTypes[part.name] = true;
-                }
-            });
-        });
-        files.forEach((file: IComponentComposite): void => {
-            if (file.componentKind === ComponentKind.FILE) {
-            (<File>file).parts.forEach((part: IComponentComposite): void => {
-                if (part instanceof Class || part instanceof Interface) {
-                    part.members.forEach((member: Method | Property): void => {
-                        let checks: string[] = [];
-                        if (member instanceof Method) {
-                            member.parameters.forEach((p: Parameter): void => {
-                                const parameters: string[] | null = p.type.match(REGEX_ONLY_TYPE_NAMES);
-                                if (parameters !== null) {
-                                    checks = checks.concat(parameters);
-                                }
-                            });
-                        }
-                        const returnTypes: string[] | null = member.returnType.match(REGEX_ONLY_TYPE_NAMES);
-                        if (returnTypes !== null) {
-                            checks = checks.concat(returnTypes);
-                        }
-                        for (const allTypeName of checks) {
-                            const key: string = `${part.name} ${COMPOSITION_LINE} ${allTypeName}`;
-                            if (allTypeName !== part.name &&
-                                !outputConstraints.hasOwnProperty(key) && mappedTypes.hasOwnProperty(allTypeName)) {
-                                lines.push(key);
-                                outputConstraints[key] = true;
-                            }
-                        }
-                    });
-                }
-            });
-            }
-        });
-    }
-
-    lines.push('@enduml');
-
-    return lines.join(os.EOL);
-}
diff --git a/src/generateDocumentation.ts b/src/generateDocumentation.ts
deleted file mode 100644
index 1bb5576..0000000
--- a/src/generateDocumentation.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import ts from 'typescript';
-import { Class } from './components/Class';
-import { Enum } from './components/Enum';
-import { EnumValue } from './components/EnumValue';
-import { File } from './components/File';
-import * as FileFactory from './components/FileFactory';
-import { IComponentComposite } from './components/IComponentComposite';
-import { Interface } from './components/Interface';
-import { Method } from './components/Method';
-import { Parameter } from './components/Parameter';
-import { Property } from './components/Property';
-import { TypeParameter } from './components/TypeParameter';
-
-export function generateDocumentation(
-    fileNames: ReadonlyArray<string>,
-    options: ts.CompilerOptions = ts.getDefaultCompilerOptions()
-): IComponentComposite[] {
-
-    // Build a program using the set of root file names in fileNames
-    const program: ts.Program = ts.createProgram(fileNames, options);
-
-    // Get the checker, we will use it to find more about classes
-    const checker: ts.TypeChecker = program.getTypeChecker();
-
-    const result: IComponentComposite[] = [];
-
-    // Visit every sourceFile in the program
-    program.getSourceFiles()
-        .forEach((sourceFile: ts.SourceFile): void => {
-            if (!sourceFile.isDeclarationFile) {
-                const file: IComponentComposite | undefined = FileFactory.create(sourceFile, checker);
-                if (file !== undefined) {
-                    result.push(file);
-                }
-            }
-        });
-
-    return result;
-}
diff --git a/src/index.ts b/src/index.ts
index 1cb25b1..a01bb7e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,4 +1,4 @@
-#!/usr/bin/env node
+// tslint:disable:no-console
 
 import commander from 'commander';
 import fs from 'fs';
@@ -6,12 +6,10 @@ import G from 'glob';
 import os from 'os';
 import path from 'path';
 import ts from 'typescript';
-import { convertToPlant } from './convertToPlant';
-import { generateDocumentation } from './generateDocumentation';
+import { tplant } from './tplant';
 
 commander
-    .version('2.1.8')
-    .usage('[options]')
+    .version('2.2.0')
     .option('-i, --input <path>', 'Define the path of the Typescript file')
     .option('-o, --output <path>', 'Define the path of the output file. If not defined, it\'ll output on the STDOUT')
     .option(
@@ -38,8 +36,8 @@ G(<string>commander.input, {}, (err: Error | null, matches: string[]): void => {
 
     const tsConfigFile: string | undefined = findTsConfigFile(<string>commander.input, <string | undefined>commander.tsconfig);
 
-    const output: string = convertToPlant(
-        generateDocumentation(matches, getCompilerOptions(tsConfigFile)),
+    const output: string = tplant.convertToPlant(
+        tplant.generateDocumentation(matches, getCompilerOptions(tsConfigFile)),
         {
             compositions: <boolean>commander.compositions,
             onlyInterfaces: <boolean>commander.onlyInterfaces
@@ -91,6 +89,8 @@ function findTsConfigFile(inputPath: string, tsConfigPath?: string): string | un
     if (fs.existsSync(cwdTsConfigFile)) {
         return cwdTsConfigFile;
     }
+
+    return;
 }
 
 function getCompilerOptions(tsConfigFilePath?: string): ts.CompilerOptions {
diff --git a/src/tplant.ts b/src/tplant.ts
new file mode 100644
index 0000000..b47e8ac
--- /dev/null
+++ b/src/tplant.ts
@@ -0,0 +1,136 @@
+import * as os from 'os';
+import ts from 'typescript';
+import { Class } from './Components/Class';
+import { File } from './Components/File';
+import { Interface } from './Components/Interface';
+import { Method } from './Components/Method';
+import { Parameter } from './Components/Parameter';
+import { Property } from './Components/Property';
+import { ComponentKind } from './Models/ComponentKind';
+import { IComponentComposite } from './Models/IComponentComposite';
+
+import { FileFactory } from './Factories/FileFactory';
+import { ICommandOptions } from './Models/ICommandOptions';
+
+const COMPOSITION_LINE: string = '*--';
+const REGEX_ONLY_TYPE_NAMES: RegExp = /\w+/g;
+
+export namespace tplant {
+
+    export function generateDocumentation(
+        fileNames: ReadonlyArray<string>,
+        options: ts.CompilerOptions = ts.getDefaultCompilerOptions()
+    ): IComponentComposite[] {
+
+        // Build a program using the set of root file names in fileNames
+        const program: ts.Program = ts.createProgram(fileNames, options);
+
+        // Get the checker, we will use it to find more about classes
+        const checker: ts.TypeChecker = program.getTypeChecker();
+
+        const result: IComponentComposite[] = [];
+
+        // Visit every sourceFile in the program
+        program.getSourceFiles()
+            .forEach((sourceFile: ts.SourceFile): void => {
+                if (!sourceFile.isDeclarationFile) {
+                    const file: IComponentComposite | undefined = FileFactory.create(sourceFile, checker);
+                    if (file !== undefined) {
+                        result.push(file);
+                    }
+                }
+            });
+
+        return result;
+    }
+
+    export function convertToPlant(files: IComponentComposite[], options: ICommandOptions = {
+        compositions: false,
+        onlyInterfaces: false
+    }): string {
+
+        const lines: string[] = [];
+
+        if (options.onlyInterfaces) {
+            for (const file of files) {
+                (<File>file).parts = (<File>file).parts
+                    .filter((part: IComponentComposite): boolean => part.componentKind === ComponentKind.INTERFACE);
+            }
+        }
+
+        lines.push('@startuml');
+
+        files.forEach((file: IComponentComposite): void => {
+            const conversion: string = file.toPUML();
+            if (conversion !== '') {
+                lines.push(conversion);
+            }
+        });
+
+        if (options.compositions) {
+            lines.push(...createCompositions(files));
+        }
+
+        lines.push('@enduml');
+
+        return lines.join(os.EOL);
+    }
+
+    function createCompositions(files: IComponentComposite[]): string[] {
+        const compositions: string[] = [];
+
+        const mappedTypes: { [x: string]: boolean } = {};
+        const outputConstraints: { [x: string]: boolean } = {};
+        files.forEach((file: IComponentComposite): void => {
+            (<File>file).parts.forEach((part: IComponentComposite): void => {
+                if (part.componentKind === ComponentKind.CLASS ||
+                    part.componentKind === ComponentKind.INTERFACE ||
+                    part.componentKind === ComponentKind.ENUM
+                ) {
+                    mappedTypes[part.name] = true;
+                }
+            });
+        });
+        files.forEach((file: IComponentComposite): void => {
+            if (file.componentKind !== ComponentKind.FILE) {
+                return;
+            }
+
+            (<File>file).parts.forEach((part: IComponentComposite): void => {
+                if (!(part instanceof Class) && !(part instanceof Interface)) {
+                    return;
+                }
+
+                part.members.forEach((member: IComponentComposite): void => {
+                    let checks: string[] = [];
+
+                    if (member instanceof Method) {
+                        member.parameters.forEach((parameter: IComponentComposite): void => {
+                            const parameters: string[] | null = (<Parameter>parameter).parameterType.match(REGEX_ONLY_TYPE_NAMES);
+                            if (parameters !== null) {
+                                checks = checks.concat(parameters);
+                            }
+                        });
+                    }
+
+                    const returnTypes: string[] | null = (<Method | Property>member).returnType.match(REGEX_ONLY_TYPE_NAMES);
+                    if (returnTypes !== null) {
+                        checks = checks.concat(returnTypes);
+                    }
+
+                    for (const allTypeName of checks) {
+                        const key: string = `${part.name} ${COMPOSITION_LINE} ${allTypeName}`;
+                        if (allTypeName !== part.name &&
+                            !outputConstraints.hasOwnProperty(key) && mappedTypes.hasOwnProperty(allTypeName)) {
+                            compositions.push(key);
+                            outputConstraints[key] = true;
+                        }
+                    }
+
+                });
+            });
+        });
+
+        return compositions;
+    }
+}
diff --git a/test/Handbook/Basic Types/BasicTypes.ts b/test/Handbook/Basic Types/BasicTypes.ts
new file mode 100644
index 0000000..571ab76
--- /dev/null
+++ b/test/Handbook/Basic Types/BasicTypes.ts	
@@ -0,0 +1,287 @@
+namespace BasicTypes {
+    
+    /**
+    * Introduction
+    *
+    * For programs to be useful, we need to be able to work with some of the simplest units of data: numbers, strings, structures, boolean values, and the like. In TypeScript, we support much the same types as you would expect in JavaScript, with a convenient enumeration type thrown in to help things along.
+    */
+    
+    class Boolean {
+        /**
+        * The most basic datatype is the simple true/false value, which JavaScript and TypeScript call a boolean value.
+        */
+        
+        isDone: boolean = false;
+    }
+    
+    class Number {
+        /**
+        * As in JavaScript, all numbers in TypeScript are floating point values. These floating point numbers get the type number. In addition to hexadecimal and decimal literals, TypeScript also supports binary and octal literals introduced in ECMAScript 2015.
+        */
+        
+        decimal: number = 6;
+        hex: number = 0xf00d;
+        binary: number = 0b1010;
+        octal: number = 0o744;
+    }
+    
+    class String {
+        /**
+        * Another fundamental part of creating programs in JavaScript for webpages and servers alike is working with textual data. As in other languages, we use the type string to refer to these textual datatypes. Just like JavaScript, TypeScript also uses double quotes (") or single quotes (') to surround string data.
+        */
+        
+        color: string = "blue";
+        color2 = 'red';
+        
+        /**
+        * You can also use template strings, which can span multiple lines and have embedded expressions. These strings are surrounded by the backtick/backquote (`) character, and embedded expressions are of the form ${ expr }.
+        */
+        
+        fullName: string = `Bob Bobbington`;
+        age: number = 37;
+        sentence: string = `Hello, my name is ${ this.fullName }.
+        
+        I'll be ${ this.age + 1 } years old next month.`;
+        
+        /**
+        * This is equivalent to declaring sentence like so:
+        */
+        
+        sentence2: string = "Hello, my name is " + this.fullName + ".\n\n" +
+        "I'll be " + (this.age + 1) + " years old next month.";
+    }
+    
+    class Array2 {
+        /**
+        * TypeScript, like JavaScript, allows you to work with arrays of values. Array types can be written in one of two ways. In the first, you use the type of the elements followed by [] to denote an array of that element type:
+        */
+        
+        list: number[] = [1, 2, 3];
+        
+        /**
+        * The second way uses a generic array type, Array<elemType>:
+        */
+        
+        list2: Array<number> = [1, 2, 3];
+    }
+    
+    class Tuple {
+        /**
+        * Tuple types allow you to express an array where the type of a fixed number of elements is known, but need not be the same. For example, you may want to represent a value as a pair of a string and a number:
+        */
+        
+        // Declare a tuple type
+        x: [string, number];
+        // Initialize it
+        x2 = ["hello", 10]; // OK
+        // Initialize it incorrectly
+        x3 = [10, "hello"]; // Error
+        
+        /**
+        * When accessing an element with a known index, the correct type is retrieved:
+        */
+        
+        // console.log(x[0].substr(1)); // OK
+        // console.log(x[1].substr(1)); // Error, 'number' does not have 'substr'
+        
+        /**
+        * When accessing an element outside the set of known indices, a union type is used instead:
+        */
+        
+        // x[3] = "world"; // OK, 'string' can be assigned to 'string | number'
+        
+        // console.log(x[5].toString()); // OK, 'string' and 'number' both have 'toString'
+        
+        // x[6] = true; // Error, 'boolean' isn't 'string | number'
+        
+        /**
+        * Union types are an advanced topic that we’ll cover in a later chapter.
+        */
+    }
+    
+    enum Color {Red, Green, Blue};
+    enum Color2 {Red = 1, Green, Blue};
+    enum Color3 {Red = 1, Green = 2, Blue = 4};
+    enum Color4 {Red = 1, Green, Blue};
+    
+    class Enum {
+        /**
+        * A helpful addition to the standard set of datatypes from JavaScript is the enum. As in languages like C#, an enum is a way of giving more friendly names to sets of numeric values.
+        */
+        
+        // enum Color {Red, Green, Blue}
+        c: Color = Color.Green;
+        
+        /**
+        * By default, enums begin numbering their members starting at 0. You can change this by manually setting the value of one of its members. For example, we can start the previous example at 1 instead of 0:
+        */
+        
+        // enum Color {Red = 1, Green, Blue}
+        c2: Color2 = Color2.Green;
+        
+        /**
+        * Or, even manually set all the values in the enum:
+        */
+        
+        // enum Color {Red = 1, Green = 2, Blue = 4}
+        c3: Color3 = Color3.Green;
+        
+        /**
+        * A handy feature of enums is that you can also go from a numeric value to the name of that value in the enum. For example, if we had the value 2 but weren’t sure what that mapped to in the Color enum above, we could look up the corresponding name:
+        */
+        
+        // enum Color {Red = 1, Green, Blue}
+        colorName: string = Color4[2];
+        
+        // console.log(colorName); // Displays 'Green' as its value is 2 above
+    }
+    
+    class Any {
+        /**
+        * We may need to describe the type of variables that we do not know when we are writing an application. These values may come from dynamic content, e.g. from the user or a 3rd party library. In these cases, we want to opt-out of type checking and let the values pass through compile-time checks. To do so, we label these with the any type:
+        */
+        
+        notSure: any = 4;
+        notSure2 = "maybe a string instead";
+        notSure3 = false; // okay, definitely a boolean
+        
+        /**
+        * The any type is a powerful way to work with existing JavaScript, allowing you to gradually opt-in and opt-out of type checking during compilation. You might expect Object to play a similar role, as it does in other languages. However, variables of type Object only allow you to assign any value to them. You can’t call arbitrary methods on them, even ones that actually exist:
+        */
+        
+        notSure4: any = 4;
+        // notSure.ifItExists(); // okay, ifItExists might exist at runtime
+        // notSure.toFixed(); // okay, toFixed exists (but the compiler doesn't check)
+        
+        // prettySure: Object = 4;
+        // prettySure.toFixed(); // Error: Property 'toFixed' doesn't exist on type 'Object'.
+        
+        /**
+        * The any type is also handy if you know some part of the type, but perhaps not all of it. For example, you may have an array but the array has a mix of different types:
+        */
+        
+        list: any[] = [1, true, "free"];
+        
+        // list[1] = 100;
+        
+    }
+    
+    class Void {
+        /**
+        * void is a little like the opposite of any: the absence of having any type at all. You may commonly see this as the return type of functions that do not return a value:
+        */
+        
+        warnUser(): void {
+            console.log("This is my warning message");
+        }
+        
+        /**
+        * Declaring variables of type void is not useful because you can only assign undefined or null to them:
+        */
+        
+        unusable: void = undefined;
+    }
+    
+    class NullAndUndefined {
+        /**
+        * In TypeScript, both undefined and null actually have their own types named undefined and null respectively. Much like void, they’re not extremely useful on their own:
+        */
+        
+        // Not much else we can assign to these variables!
+        u: undefined = undefined;
+        n: null = null;
+        
+        /**
+        * By default null and undefined are subtypes of all other types. That means you can assign null and undefined to something like number.
+        *
+        * However, when using the --strictNullChecks flag, null and undefined are only assignable to void and their respective types. This helps avoid many common errors. In cases where you want to pass in either a string or null or undefined, you can use the union type string | null | undefined. Once again, more on union types later on.
+        *
+        *     As a note: we encourage the use of --strictNullChecks when possible, but for the purposes of this handbook, we will assume it is turned off.
+        */
+    }
+    
+    class Never {
+        /**
+        * The never type represents the type of values that never occur. For instance, never is the return type for a function expression or an arrow function expression that always throws an exception or one that never returns; Variables also acquire the type never when narrowed by any type guards that can never be true.
+        *
+        * The never type is a subtype of, and assignable to, every type; however, no type is a subtype of, or assignable to, never (except never itself). Even any isn’t assignable to never.
+        *
+        * Some examples of functions returning never:
+        */
+        
+        // Function returning never must have unreachable end point
+        error(message: string): never {
+            throw new Error(message);
+        }
+        
+        // Inferred return type is never
+        fail() {
+            return this.error("Something failed");
+        }
+        
+        // Function returning never must have unreachable end point
+        infiniteLoop(): never {
+            while (true) {
+            }
+        }
+        
+    }
+    
+    interface Object {
+        /**
+        * object is a type that represents the non-primitive type, i.e. anything that is not number, string, boolean, symbol, null, or undefined.
+        *
+        * With object type, APIs like Object.create can be better represented. For example:
+        */
+        
+        create(o: object | null): void;
+        
+        // create({ prop: 0 }); // OK
+        // create(null); // OK
+        
+        // create(42); // Error
+        // create("string"); // Error
+        // create(false); // Error
+        // create(undefined); // Error
+        
+    }
+    
+    class TypeAssertions {
+        /**
+        * Sometimes you’ll end up in a situation where you’ll know more about a value than TypeScript does. Usually this will happen when you know the type of some entity could be more specific than its current type.
+        *
+        * Type assertions are a way to tell the compiler “trust me, I know what I’m doing.” A type assertion is like a type cast in other languages, but performs no special checking or restructuring of data. It has no runtime impact, and is used purely by the compiler. TypeScript assumes that you, the programmer, have performed any special checks that you need.
+        *
+        * Type assertions have two forms. One is the “angle-bracket” syntax:
+        */
+        
+        someValue: any = "this is a string";
+        
+        strLength: number = (<string>this.someValue).length;
+        
+        /**
+        * And the other is the as-syntax:
+        */
+        
+        someValue2: any = "this is a string";
+        
+        strLength2: number = (this.someValue2 as string).length;
+        
+        /**
+        * The two samples are equivalent. Using one over the other is mostly a choice of preference; however, when using TypeScript with JSX, only as-style assertions are allowed.
+        */
+    }
+    
+    /**
+    *  A note about let
+    *
+    * You may’ve noticed that so far, we’ve been using the let keyword instead of JavaScript’s var keyword which you might be more familiar with. The let keyword is actually a newer JavaScript construct that TypeScript makes available. We’ll discuss the details later, but many common problems in JavaScript are alleviated by using let, so you should use it instead of var whenever possible.
+    *
+    * Made with in Redmond
+    * Follow @typescript
+    *
+    * ©2012-2019 Microsoft
+    *
+    * Privacy
+    */
+}
\ No newline at end of file
diff --git a/test/Handbook/Namespaces/Namespaces.ts b/test/Handbook/Namespaces/Namespaces.ts
new file mode 100644
index 0000000..f4c38c5
--- /dev/null
+++ b/test/Handbook/Namespaces/Namespaces.ts
@@ -0,0 +1,268 @@
+/** 
+ * Namespaces
+ * 
+ * Table of contents
+ * 
+ * Introduction First steps
+ * 
+ *     Validators in a single file
+ * 
+ * Namespacing
+ * 
+ *     Namespaced Validators
+ * 
+ * Splitting Across Files
+ * 
+ *     Multi-file namespaces
+ * 
+ * Aliases Working with Other JavaScript Libraries
+ * 
+ *     Ambient Namespaces
+ * 
+ *     A note about terminology: It’s important to note that in TypeScript 1.5, the nomenclature has changed. “Internal modules” are now “namespaces”. “External modules” are now simply “modules”, as to align with ECMAScript 2015’s terminology, (namely that module X { is equivalent to the now-preferred namespace X {).
+ * 
+ * Introduction
+ * 
+ * ↥ back to top
+ * 
+ * This post outlines the various ways to organize your code using namespaces (previously “internal modules”) in TypeScript. As we alluded in our note about terminology, “internal modules” are now referred to as “namespaces”. Additionally, anywhere the module keyword was used when declaring an internal module, the namespace keyword can and should be used instead. This avoids confusing new users by overloading them with similarly named terms.
+ * First steps
+ * 
+ * ↥ back to top
+ * 
+ * Let’s start with the program we’ll be using as our example throughout this page. We’ve written a small set of simplistic string validators, as you might write to check a user’s input on a form in a webpage or check the format of an externally-provided data file.
+ * Validators in a single file
+ * 
+ * ↥ back to top
+ */ 
+
+interface StringValidator {
+    isAcceptable(s: string): boolean;
+}
+
+let lettersRegexp = /^[A-Za-z]+$/;
+let numberRegexp = /^[0-9]+$/;
+
+class LettersOnlyValidator implements StringValidator {
+    isAcceptable(s: string) {
+        return lettersRegexp.test(s);
+    }
+}
+
+class ZipCodeValidator implements StringValidator {
+    isAcceptable(s: string) {
+        return s.length === 5 && numberRegexp.test(s);
+    }
+}
+
+// Some samples to try
+let strings = ["Hello", "98052", "101"];
+
+// Validators to use
+let validators: { [s: string]: StringValidator; } = {};
+validators["ZIP code"] = new ZipCodeValidator();
+validators["Letters only"] = new LettersOnlyValidator();
+
+// Show whether each string passed each validator
+for (let s of strings) {
+    for (let name in validators) {
+        let isMatch = validators[name].isAcceptable(s);
+        console.log(`'${ s }' ${ isMatch ? "matches" : "does not match" } '${ name }'.`);
+    }
+}
+
+/** 
+* Namespacing
+* 
+* ↥ back to top
+* 
+* As we add more validators, we’re going to want to have some kind of organization scheme so that we can keep track of our types and not worry about name collisions with other objects. Instead of putting lots of different names into the global namespace, let’s wrap up our objects into a namespace.
+* 
+* In this example, we’ll move all validator-related entities into a namespace called Validation. Because we want the interfaces and classes here to be visible outside the namespace, we preface them with export. Conversely, the variables lettersRegexp and numberRegexp are implementation details, so they are left unexported and will not be visible to code outside the namespace. In the test code at the bottom of the file, we now need to qualify the names of the types when used outside the namespace, e.g. Validation.LettersOnlyValidator.
+* Namespaced Validators
+* 
+* ↥ back to top
+*/
+
+namespace Validation {
+    export interface StringValidator {
+        isAcceptable(s: string): boolean;
+    }
+    
+    const lettersRegexp = /^[A-Za-z]+$/;
+    const numberRegexp = /^[0-9]+$/;
+    
+    export class LettersOnlyValidator implements StringValidator {
+        isAcceptable(s: string) {
+            return lettersRegexp.test(s);
+        }
+    }
+    
+    export class ZipCodeValidator implements StringValidator {
+        isAcceptable(s: string) {
+            return s.length === 5 && numberRegexp.test(s);
+        }
+    }
+}
+
+// Some samples to try
+let strings2 = ["Hello", "98052", "101"];
+
+// Validators to use
+let validators2: { [s: string]: Validation.StringValidator; } = {};
+validators2["ZIP code"] = new Validation.ZipCodeValidator();
+validators2["Letters only"] = new Validation.LettersOnlyValidator();
+
+// Show whether each string passed each validator
+for (let s of strings2) {
+    for (let name in validators2) {
+        console.log(`"${ s }" - ${ validators2[name].isAcceptable(s) ? "matches" : "does not match" } ${ name }`);
+    }
+}
+
+/** 
+* Splitting Across Files
+* 
+* ↥ back to top
+* 
+* As our application grows, we’ll want to split the code across multiple files to make it easier to maintain.
+* Multi-file namespaces
+* 
+* ↥ back to top
+* 
+* Here, we’ll split our Validation namespace across many files. Even though the files are separate, they can each contribute to the same namespace and can be consumed as if they were all defined in one place. Because there are dependencies between files, we’ll add reference tags to tell the compiler about the relationships between the files. Our test code is otherwise unchanged.
+* Validation.ts
+*/
+
+namespace Validation2 {
+    export interface StringValidator {
+        isAcceptable(s: string): boolean;
+    }
+}
+
+// LettersOnlyValidator.ts
+
+/// <reference path="Validation.ts" />
+namespace Validation3 {
+    const lettersRegexp = /^[A-Za-z]+$/;
+    export class LettersOnlyValidator implements StringValidator {
+        isAcceptable(s: string) {
+            return lettersRegexp.test(s);
+        }
+    }
+}
+
+// ZipCodeValidator.ts
+
+/// <reference path="Validation.ts" />
+namespace Validation4 {
+    const numberRegexp = /^[0-9]+$/;
+    export class ZipCodeValidator implements StringValidator {
+        isAcceptable(s: string) {
+            return s.length === 5 && numberRegexp.test(s);
+        }
+    }
+}
+
+// Test.ts
+
+/// <reference path="Validation.ts" />
+/// <reference path="LettersOnlyValidator.ts" />
+/// <reference path="ZipCodeValidator.ts" />
+
+// Some samples to try
+let strings3 = ["Hello", "98052", "101"];
+
+// Validators to use
+let validators3: { [s: string]: Validation.StringValidator; } = {};
+validators3["ZIP code"] = new Validation.ZipCodeValidator();
+validators3["Letters only"] = new Validation.LettersOnlyValidator();
+
+// Show whether each string passed each validator
+for (let s of strings3) {
+    for (let name in validators3) {
+        console.log(`"${ s }" - ${ validators3[name].isAcceptable(s) ? "matches" : "does not match" } ${ name }`);
+    }
+}
+
+/** 
+* Once there are multiple files involved, we’ll need to make sure all of the compiled code gets loaded. There are two ways of doing this.
+* 
+* First, we can use concatenated output using the --outFile flag to compile all of the input files into a single JavaScript output file:
+* 
+* tsc --outFile sample.js Test.ts
+* 
+* The compiler will automatically order the output file based on the reference tags present in the files. You can also specify each file individually:
+* 
+* tsc --outFile sample.js Validation.ts LettersOnlyValidator.ts ZipCodeValidator.ts Test.ts
+* 
+* Alternatively, we can use per-file compilation (the default) to emit one JavaScript file for each input file. If multiple JS files get produced, we’ll need to use <script> tags on our webpage to load each emitted file in the appropriate order, for example:
+* MyTestPage.html (excerpt)
+* 
+*     <script src="Validation.js" type="text/javascript" />
+*     <script src="LettersOnlyValidator.js" type="text/javascript" />
+*     <script src="ZipCodeValidator.js" type="text/javascript" />
+*     <script src="Test.js" type="text/javascript" />
+* 
+* Aliases
+* 
+* ↥ back to top
+* 
+* Another way that you can simplify working with namespaces is to use import q = x.y.z to create shorter names for commonly-used objects. Not to be confused with the import x = require("name") syntax used to load modules, this syntax simply creates an alias for the specified symbol. You can use these sorts of imports (commonly referred to as aliases) for any kind of identifier, including objects created from module imports.
+*/ 
+
+namespace Shapes {
+    export namespace Polygons {
+        export class Triangle { }
+        export class Square { }
+    }
+}
+
+import polygons = Shapes.Polygons;
+let sq = new polygons.Square(); // Same as 'new Shapes.Polygons.Square()'
+
+/** 
+* Notice that we don’t use the require keyword; instead we assign directly from the qualified name of the symbol we’re importing. This is similar to using var, but also works on the type and namespace meanings of the imported symbol. Importantly, for values, import is a distinct reference from the original symbol, so changes to an aliased var will not be reflected in the original variable.
+* Working with Other JavaScript Libraries
+* 
+* ↥ back to top
+* 
+* To describe the shape of libraries not written in TypeScript, we need to declare the API that the library exposes. Because most JavaScript libraries expose only a few top-level objects, namespaces are a good way to represent them.
+* 
+* We call declarations that don’t define an implementation “ambient”. Typically these are defined in .d.ts files. If you’re familiar with C/C++, you can think of these as .h files. Let’s look at a few examples.
+* Ambient Namespaces
+* 
+* ↥ back to top
+* 
+* The popular library D3 defines its functionality in a global object called d3. Because this library is loaded through a <script> tag (instead of a module loader), its declaration uses namespaces to define its shape. For the TypeScript compiler to see this shape, we use an ambient namespace declaration. For example, we could begin writing it as follows:
+* D3.d.ts (simplified excerpt)
+*/
+
+declare namespace D3 {
+    export interface Selectors {
+        select: {
+            (selector: string): Selection;
+            (element: EventTarget): Selection;
+        };
+    }
+    
+    export interface Event {
+        x: number;
+        y: number;
+    }
+    
+    export interface Base extends Selectors {
+        event: Event;
+    }
+}
+
+declare var d3: D3.Base;
+
+/** 
+* Made with in Redmond
+* Follow @typescript
+* 
+* ©2012-2019 Microsoft
+* 
+* Privacy
+*/ 
\ No newline at end of file
diff --git a/sample/Abstract/AbstractClass.ts b/test/Playground/Abstract/AbstractClass.ts
similarity index 100%
rename from sample/Abstract/AbstractClass.ts
rename to test/Playground/Abstract/AbstractClass.ts
diff --git a/sample/Classes/Greeter.ts b/test/Playground/Classes/Greeter.ts
similarity index 100%
rename from sample/Classes/Greeter.ts
rename to test/Playground/Classes/Greeter.ts
diff --git a/sample/Enum/Enum.ts b/test/Playground/Enum/Enum.ts
similarity index 100%
rename from sample/Enum/Enum.ts
rename to test/Playground/Enum/Enum.ts
diff --git a/sample/Generics/Complex.ts b/test/Playground/Generics/Complex.ts
similarity index 100%
rename from sample/Generics/Complex.ts
rename to test/Playground/Generics/Complex.ts
diff --git a/sample/Generics/Greeter.ts b/test/Playground/Generics/Greeter.ts
similarity index 100%
rename from sample/Generics/Greeter.ts
rename to test/Playground/Generics/Greeter.ts
diff --git a/sample/Generics/RecursiveGenericType.ts b/test/Playground/Generics/RecursiveGenericType.ts
similarity index 100%
rename from sample/Generics/RecursiveGenericType.ts
rename to test/Playground/Generics/RecursiveGenericType.ts
diff --git a/sample/Inheritance/Animal.ts b/test/Playground/Inheritance/Animal.ts
similarity index 100%
rename from sample/Inheritance/Animal.ts
rename to test/Playground/Inheritance/Animal.ts
diff --git a/sample/Inheritance/Horse.ts b/test/Playground/Inheritance/Horse.ts
similarity index 100%
rename from sample/Inheritance/Horse.ts
rename to test/Playground/Inheritance/Horse.ts
diff --git a/sample/Inheritance/Snake.ts b/test/Playground/Inheritance/Snake.ts
similarity index 100%
rename from sample/Inheritance/Snake.ts
rename to test/Playground/Inheritance/Snake.ts
diff --git a/sample/Inheritance/autos.ts b/test/Playground/Inheritance/autos.ts
similarity index 100%
rename from sample/Inheritance/autos.ts
rename to test/Playground/Inheritance/autos.ts
diff --git a/sample/Inheritance/index.ts b/test/Playground/Inheritance/index.ts
similarity index 100%
rename from sample/Inheritance/index.ts
rename to test/Playground/Inheritance/index.ts
diff --git a/sample/RayTracer/Camera.ts b/test/Playground/RayTracer/Camera.ts
similarity index 100%
rename from sample/RayTracer/Camera.ts
rename to test/Playground/RayTracer/Camera.ts
diff --git a/sample/RayTracer/Color.ts b/test/Playground/RayTracer/Color.ts
similarity index 100%
rename from sample/RayTracer/Color.ts
rename to test/Playground/RayTracer/Color.ts
diff --git a/sample/RayTracer/Intersection.ts b/test/Playground/RayTracer/Intersection.ts
similarity index 100%
rename from sample/RayTracer/Intersection.ts
rename to test/Playground/RayTracer/Intersection.ts
diff --git a/sample/RayTracer/Light.ts b/test/Playground/RayTracer/Light.ts
similarity index 100%
rename from sample/RayTracer/Light.ts
rename to test/Playground/RayTracer/Light.ts
diff --git a/sample/RayTracer/Plane.ts b/test/Playground/RayTracer/Plane.ts
similarity index 100%
rename from sample/RayTracer/Plane.ts
rename to test/Playground/RayTracer/Plane.ts
diff --git a/sample/RayTracer/Ray.ts b/test/Playground/RayTracer/Ray.ts
similarity index 100%
rename from sample/RayTracer/Ray.ts
rename to test/Playground/RayTracer/Ray.ts
diff --git a/sample/RayTracer/RayTracer.ts b/test/Playground/RayTracer/RayTracer.ts
similarity index 100%
rename from sample/RayTracer/RayTracer.ts
rename to test/Playground/RayTracer/RayTracer.ts
diff --git a/sample/RayTracer/Scene.ts b/test/Playground/RayTracer/Scene.ts
similarity index 100%
rename from sample/RayTracer/Scene.ts
rename to test/Playground/RayTracer/Scene.ts
diff --git a/sample/RayTracer/Sphere.ts b/test/Playground/RayTracer/Sphere.ts
similarity index 100%
rename from sample/RayTracer/Sphere.ts
rename to test/Playground/RayTracer/Sphere.ts
diff --git a/sample/RayTracer/Surface.ts b/test/Playground/RayTracer/Surface.ts
similarity index 100%
rename from sample/RayTracer/Surface.ts
rename to test/Playground/RayTracer/Surface.ts
diff --git a/sample/RayTracer/Surfaces.ts b/test/Playground/RayTracer/Surfaces.ts
similarity index 100%
rename from sample/RayTracer/Surfaces.ts
rename to test/Playground/RayTracer/Surfaces.ts
diff --git a/sample/RayTracer/Thing.ts b/test/Playground/RayTracer/Thing.ts
similarity index 100%
rename from sample/RayTracer/Thing.ts
rename to test/Playground/RayTracer/Thing.ts
diff --git a/sample/RayTracer/Vector.ts b/test/Playground/RayTracer/Vector.ts
similarity index 100%
rename from sample/RayTracer/Vector.ts
rename to test/Playground/RayTracer/Vector.ts
diff --git a/sample/RayTracer/index.ts b/test/Playground/RayTracer/index.ts
similarity index 100%
rename from sample/RayTracer/index.ts
rename to test/Playground/RayTracer/index.ts
diff --git a/test/arguments.spec.js b/test/arguments.spec.js
deleted file mode 100644
index 860a888..0000000
--- a/test/arguments.spec.js
+++ /dev/null
@@ -1,254 +0,0 @@
-const assert = require('assert');
-const os = require('os');
-const generateDocumentation = require("../dist/generateDocumentation");
-const convertToPlant = require("../dist/convertToPlant");
-
-describe("Test commander options", () => {
-
-    it('generate PlantUML with only Interfaces for Inheritance/autos.ts', () => {
-        assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Inheritance/autos.ts"]), { compositions: false, onlyInterfaces: true }),
-            ['@startuml',
-                'interface IVehicle {',
-                '    +start(type: string): string',
-                '}',
-                'interface ITrunk {',
-                '    +openTrunk(): void',
-                '}',
-                'interface IWindow {',
-                '    +openWindow(): void',
-                '}',
-                '@enduml'].join(os.EOL));
-    });
-
-    it("generate PlantUML for RayTracer with compositions", () => {
-        assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/RayTracer/index.ts"]), { compositions: true, onlyInterfaces: false }),
-            ['@startuml',
-                'class Vector {',
-                '    +x: number',
-                '    +y: number',
-                '    +z: number',
-                '    +{static} times(k: number, v: Vector): Vector',
-                '    +{static} minus(v1: Vector, v2: Vector): Vector',
-                '    +{static} plus(v1: Vector, v2: Vector): Vector',
-                '    +{static} dot(v1: Vector, v2: Vector): number',
-                '    +{static} mag(v: Vector): number',
-                '    +{static} norm(v: Vector): Vector',
-                '    +{static} cross(v1: Vector, v2: Vector): Vector',
-                '}',
-                'interface Ray {',
-                '    +start: Vector',
-                '    +dir: Vector',
-                '}',
-                'interface Intersection {',
-                '    +thing: Thing',
-                '    +ray: Ray',
-                '    +dist: number',
-                '}',
-                'class Color {',
-                '    +r: number',
-                '    +g: number',
-                '    +b: number',
-                '    +{static} scale(k: number, v: Color): Color',
-                '    +{static} plus(v1: Color, v2: Color): Color',
-                '    +{static} times(v1: Color, v2: Color): Color',
-                '    +{static} white: Color',
-                '    +{static} grey: Color',
-                '    +{static} black: Color',
-                '    +{static} background: Color',
-                '    +{static} defaultColor: Color',
-                '    +{static} toDrawingColor(c: Color): { r: number; g: number; b: number; }',
-                '}',
-                'interface Surface {',
-                '    +diffuse: (pos: Vector) => Color',
-                '    +specular: (pos: Vector) => Color',
-                '    +reflect: (pos: Vector) => number',
-                '    +roughness: number',
-                '}',
-                'interface Thing {',
-                '    +intersect: (ray: Ray) => Intersection',
-                '    +normal: (pos: Vector) => Vector',
-                '    +surface: Surface',
-                '    +destroy(): void',
-                '    +destroy(name: string): void',
-                '}',
-                'interface Light {',
-                '    +pos: Vector',
-                '    +color: Color',
-                '}',
-                'class Camera {',
-                '    +forward: Vector',
-                '    +right: Vector',
-                '    +up: Vector',
-                '    +pos: Vector',
-                '}',
-                'interface Scene {',
-                '    +things: Thing[]',
-                '    +lights: Light[]',
-                '    +camera: Camera',
-                '}',
-                'class Plane implements Thing {',
-                '    +normal: (pos: Vector) => Vector',
-                '    +intersect: (ray: Ray) => Intersection',
-                '    +surface: Surface',
-                '}',
-                'class Sphere implements Thing {',
-                '    +radius2: number',
-                '    +center: Vector',
-                '    +surface: Surface',
-                '    +normal(pos: Vector): Vector',
-                '    +intersect(ray: Ray): { thing: this; ray: Ray; dist: number; }',
-                '}',
-                'namespace Surfaces {',
-                '}',
-                'class RayTracer {',
-                '    -maxDepth: number',
-                '    -intersections(ray: Ray, scene: Scene): Intersection',
-                '    -testRay(ray: Ray, scene: Scene): number',
-                '    -traceRay(ray: Ray, scene: Scene, depth: number): Color',
-                '    -shade(isect: Intersection, scene: Scene, depth: number): Color',
-                '    -getReflectionColor(thing: Thing, pos: Vector, normal: Vector, rd: Vector, scene: Scene, depth: number): Color',
-                '    -getNaturalColor(thing: Thing, pos: Vector, norm: Vector, rd: Vector, scene: Scene): any',
-                '    +render(scene: any, ctx: any, screenWidth: any, screenHeight: any): void',
-                '}',
-                'Ray *-- Vector',
-                'Intersection *-- Thing',
-                'Intersection *-- Ray',
-                'Surface *-- Vector',
-                'Surface *-- Color',
-                'Thing *-- Ray',
-                'Thing *-- Intersection',
-                'Thing *-- Vector',
-                'Thing *-- Surface',
-                'Light *-- Vector',
-                'Light *-- Color',
-                'Camera *-- Vector',
-                'Scene *-- Thing',
-                'Scene *-- Light',
-                'Scene *-- Camera',
-                'Plane *-- Vector',
-                'Plane *-- Ray',
-                'Plane *-- Intersection',
-                'Plane *-- Surface',
-                'Sphere *-- Vector',
-                'Sphere *-- Surface',
-                'Sphere *-- Ray',
-                'RayTracer *-- Ray',
-                'RayTracer *-- Scene',
-                'RayTracer *-- Intersection',
-                'RayTracer *-- Color',
-                'RayTracer *-- Thing',
-                'RayTracer *-- Vector',
-                '@enduml'].join(os.EOL));
-    });
-
-    it('generate PlantUML for Generics/Complex.ts with compositions', () => {
-        assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Generics/Complex.ts"]), { compositions: true, onlyInterfaces: false }),
-            ['@startuml',
-                'interface GenericInterface<T extends string> {',
-                '    +method(arg: T): T',
-                '}',
-                'interface GenericInterface2<T extends string> {',
-                '    +property?: T',
-                '}',
-                'interface GenericInterface3<T extends string, A extends number> extends GenericInterface2 {',
-                '    +method2(arg: A): A',
-                '}',
-                'class GenericClass<T extends string, A extends number> implements GenericInterface, GenericInterface3 {',
-                '    +property?: T',
-                '    +method(arg: T): T',
-                '    +method2(arg: A): A',
-                '}',
-                'class GenericClass2<T extends string> implements GenericInterface2 {',
-                '    +property?: T',
-                '}',
-                'class ConcreteClass extends GenericClass implements GenericInterface, GenericInterface2 {',
-                '    +property: string',
-                '}',
-                'interface GenericTypes {',
-                '    +genericType: GenericClass<string, number>',
-                '    +genericType2: GenericClass2<string>',
-                '    +genericReturnType(): GenericInterface<string>',
-                '    +genericReturnType2(): GenericInterface3<string, number>',
-                '    +genericParameter(parameter: GenericInterface2<string>): void',
-                '}',
-                'GenericTypes *-- GenericClass',
-                'GenericTypes *-- GenericClass2',
-                'GenericTypes *-- GenericInterface',
-                'GenericTypes *-- GenericInterface3',
-                'GenericTypes *-- GenericInterface2',
-                '@enduml'].join(os.EOL));
-    });
-
-    it('generate PlantUML for Generics/RecursiveGenericType.ts with compositions', () => {
-        assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Generics/RecursiveGenericType.ts"]), { compositions: true, onlyInterfaces: false }),
-            ['@startuml',
-                'interface FirstGeneric<T> {',
-                '    +index: T',
-                '}',
-                'interface SecondGeneric<T> {',
-                '    +index: T',
-                '}',
-                'interface ThirdGeneric<T> {',
-                '    +index: T',
-                '}',
-                'interface NormalInterface {',
-                '    +index: any',
-                '}',
-                'interface NormalInterface_2 {',
-                '    +index: any',
-                '}',
-                'interface RecursiveGenericType {',
-                '    +recursiveGenericType: string | number | FirstGeneric<SecondGeneric<ThirdGeneric<NormalInterface> | NormalInterface_2>>',
-                '}',
-                'RecursiveGenericType *-- FirstGeneric',
-                'RecursiveGenericType *-- SecondGeneric',
-                'RecursiveGenericType *-- ThirdGeneric',
-                'RecursiveGenericType *-- NormalInterface',
-                'RecursiveGenericType *-- NormalInterface_2',
-                '@enduml'].join(os.EOL));
-    });
-
-    it("generate PlantUML for RayTracer with compositions and only Interfaces", () => {
-        assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/RayTracer/index.ts"]), { compositions: true, onlyInterfaces: true }),
-            ['@startuml',
-                'interface Ray {',
-                '    +start: Vector',
-                '    +dir: Vector',
-                '}',
-                'interface Intersection {',
-                '    +thing: Thing',
-                '    +ray: Ray',
-                '    +dist: number',
-                '}',
-                'interface Surface {',
-                '    +diffuse: (pos: Vector) => Color',
-                '    +specular: (pos: Vector) => Color',
-                '    +reflect: (pos: Vector) => number',
-                '    +roughness: number',
-                '}',
-                'interface Thing {',
-                '    +intersect: (ray: Ray) => Intersection',
-                '    +normal: (pos: Vector) => Vector',
-                '    +surface: Surface',
-                '    +destroy(): void',
-                '    +destroy(name: string): void',
-                '}',
-                'interface Light {',
-                '    +pos: Vector',
-                '    +color: Color',
-                '}',
-                'interface Scene {',
-                '    +things: Thing[]',
-                '    +lights: Light[]',
-                '    +camera: Camera',
-                '}',
-                'Intersection *-- Thing',
-                'Intersection *-- Ray',
-                'Thing *-- Ray',
-                'Thing *-- Intersection',
-                'Thing *-- Surface',
-                'Scene *-- Thing',
-                'Scene *-- Light',
-                '@enduml'].join(os.EOL));
-    });
-});
diff --git a/test/arguments.test.ts b/test/arguments.test.ts
new file mode 100644
index 0000000..9d669c0
--- /dev/null
+++ b/test/arguments.test.ts
@@ -0,0 +1,257 @@
+import * as os from 'os';
+import { tplant } from '../src/tplant';
+
+describe('Test commander options', () => {
+    
+    it('generate PlantUML with only Interfaces for Playground/Inheritance/autos.ts', () => {
+        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Inheritance/autos.ts']), { compositions: false, onlyInterfaces: true }))
+        .toEqual(
+            ['@startuml',
+            'interface IVehicle {',
+            '    +start(type: string): string',
+            '}',
+            'interface ITrunk {',
+            '    +openTrunk(): void',
+            '}',
+            'interface IWindow {',
+            '    +openWindow(): void',
+            '}',
+            '@enduml'].join(os.EOL));
+        });
+        
+        it('generate PlantUML for RayTracer with compositions', () => {
+            expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/RayTracer/index.ts']), { compositions: true, onlyInterfaces: false }))
+            .toEqual(
+                ['@startuml',
+                'class Vector {',
+                '    +x: number',
+                '    +y: number',
+                '    +z: number',
+                '    +{static} times(k: number, v: Vector): Vector',
+                '    +{static} minus(v1: Vector, v2: Vector): Vector',
+                '    +{static} plus(v1: Vector, v2: Vector): Vector',
+                '    +{static} dot(v1: Vector, v2: Vector): number',
+                '    +{static} mag(v: Vector): number',
+                '    +{static} norm(v: Vector): Vector',
+                '    +{static} cross(v1: Vector, v2: Vector): Vector',
+                '}',
+                'interface Ray {',
+                '    +start: Vector',
+                '    +dir: Vector',
+                '}',
+                'interface Intersection {',
+                '    +thing: Thing',
+                '    +ray: Ray',
+                '    +dist: number',
+                '}',
+                'class Color {',
+                '    +r: number',
+                '    +g: number',
+                '    +b: number',
+                '    +{static} scale(k: number, v: Color): Color',
+                '    +{static} plus(v1: Color, v2: Color): Color',
+                '    +{static} times(v1: Color, v2: Color): Color',
+                '    +{static} white: Color',
+                '    +{static} grey: Color',
+                '    +{static} black: Color',
+                '    +{static} background: Color',
+                '    +{static} defaultColor: Color',
+                '    +{static} toDrawingColor(c: Color): { r: number; g: number; b: number; }',
+                '}',
+                'interface Surface {',
+                '    +diffuse: (pos: Vector) => Color',
+                '    +specular: (pos: Vector) => Color',
+                '    +reflect: (pos: Vector) => number',
+                '    +roughness: number',
+                '}',
+                'interface Thing {',
+                '    +intersect: (ray: Ray) => Intersection',
+                '    +normal: (pos: Vector) => Vector',
+                '    +surface: Surface',
+                '    +destroy(): void',
+                '    +destroy(name: string): void',
+                '}',
+                'interface Light {',
+                '    +pos: Vector',
+                '    +color: Color',
+                '}',
+                'class Camera {',
+                '    +forward: Vector',
+                '    +right: Vector',
+                '    +up: Vector',
+                '    +pos: Vector',
+                '}',
+                'interface Scene {',
+                '    +things: Thing[]',
+                '    +lights: Light[]',
+                '    +camera: Camera',
+                '}',
+                'class Plane implements Thing {',
+                '    +normal: (pos: Vector) => Vector',
+                '    +intersect: (ray: Ray) => Intersection',
+                '    +surface: Surface',
+                '}',
+                'class Sphere implements Thing {',
+                '    +radius2: number',
+                '    +center: Vector',
+                '    +surface: Surface',
+                '    +normal(pos: Vector): Vector',
+                '    +intersect(ray: Ray): { thing: this; ray: Ray; dist: number; }',
+                '}',
+                'namespace Surfaces',
+                'class RayTracer {',
+                '    -maxDepth: number',
+                '    -intersections(ray: Ray, scene: Scene): Intersection',
+                '    -testRay(ray: Ray, scene: Scene): number',
+                '    -traceRay(ray: Ray, scene: Scene, depth: number): Color',
+                '    -shade(isect: Intersection, scene: Scene, depth: number): Color',
+                '    -getReflectionColor(thing: Thing, pos: Vector, normal: Vector, rd: Vector, scene: Scene, depth: number): Color',
+                '    -getNaturalColor(thing: Thing, pos: Vector, norm: Vector, rd: Vector, scene: Scene): any',
+                '    +render(scene: any, ctx: any, screenWidth: any, screenHeight: any): void',
+                '}',
+                'Ray *-- Vector',
+                'Intersection *-- Thing',
+                'Intersection *-- Ray',
+                'Surface *-- Vector',
+                'Surface *-- Color',
+                'Thing *-- Ray',
+                'Thing *-- Intersection',
+                'Thing *-- Vector',
+                'Thing *-- Surface',
+                'Light *-- Vector',
+                'Light *-- Color',
+                'Camera *-- Vector',
+                'Scene *-- Thing',
+                'Scene *-- Light',
+                'Scene *-- Camera',
+                'Plane *-- Vector',
+                'Plane *-- Ray',
+                'Plane *-- Intersection',
+                'Plane *-- Surface',
+                'Sphere *-- Vector',
+                'Sphere *-- Surface',
+                'Sphere *-- Ray',
+                'RayTracer *-- Ray',
+                'RayTracer *-- Scene',
+                'RayTracer *-- Intersection',
+                'RayTracer *-- Color',
+                'RayTracer *-- Thing',
+                'RayTracer *-- Vector',
+                '@enduml'].join(os.EOL));
+            });
+            
+            it('generate PlantUML for Generics/Complex.ts with compositions', () => {
+                expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Generics/Complex.ts']), { compositions: true, onlyInterfaces: false }))
+                .toEqual(
+                    ['@startuml',
+                    'interface GenericInterface<T extends string> {',
+                    '    +method(arg: T): T',
+                    '}',
+                    'interface GenericInterface2<T extends string> {',
+                    '    +property?: T',
+                    '}',
+                    'interface GenericInterface3<T extends string, A extends number> extends GenericInterface2 {',
+                    '    +method2(arg: A): A',
+                    '}',
+                    'class GenericClass<T extends string, A extends number> implements GenericInterface, GenericInterface3 {',
+                    '    +property?: T',
+                    '    +method(arg: T): T',
+                    '    +method2(arg: A): A',
+                    '}',
+                    'class GenericClass2<T extends string> implements GenericInterface2 {',
+                    '    +property?: T',
+                    '}',
+                    'class ConcreteClass extends GenericClass implements GenericInterface, GenericInterface2 {',
+                    '    +property: string',
+                    '}',
+                    'interface GenericTypes {',
+                    '    +genericType: GenericClass<string, number>',
+                    '    +genericType2: GenericClass2<string>',
+                    '    +genericReturnType(): GenericInterface<string>',
+                    '    +genericReturnType2(): GenericInterface3<string, number>',
+                    '    +genericParameter(parameter: GenericInterface2<string>): void',
+                    '}',
+                    'GenericTypes *-- GenericClass',
+                    'GenericTypes *-- GenericClass2',
+                    'GenericTypes *-- GenericInterface',
+                    'GenericTypes *-- GenericInterface3',
+                    'GenericTypes *-- GenericInterface2',
+                    '@enduml'].join(os.EOL));
+                });
+                
+                it('generate PlantUML for Generics/RecursiveGenericType.ts with compositions', () => {
+                    expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Generics/RecursiveGenericType.ts']), { compositions: true, onlyInterfaces: false }))
+                    .toEqual(
+                        ['@startuml',
+                        'interface FirstGeneric<T> {',
+                        '    +index: T',
+                        '}',
+                        'interface SecondGeneric<T> {',
+                        '    +index: T',
+                        '}',
+                        'interface ThirdGeneric<T> {',
+                        '    +index: T',
+                        '}',
+                        'interface NormalInterface {',
+                        '    +index: any',
+                        '}',
+                        'interface NormalInterface_2 {',
+                        '    +index: any',
+                        '}',
+                        'interface RecursiveGenericType {',
+                        '    +recursiveGenericType: string | number | FirstGeneric<SecondGeneric<ThirdGeneric<NormalInterface> | NormalInterface_2>>',
+                        '}',
+                        'RecursiveGenericType *-- FirstGeneric',
+                        'RecursiveGenericType *-- SecondGeneric',
+                        'RecursiveGenericType *-- ThirdGeneric',
+                        'RecursiveGenericType *-- NormalInterface',
+                        'RecursiveGenericType *-- NormalInterface_2',
+                        '@enduml'].join(os.EOL));
+                    });
+                    
+                    it('generate PlantUML for RayTracer with compositions and only Interfaces', () => {
+                        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/RayTracer/index.ts']), { compositions: true, onlyInterfaces: true }))
+                        .toEqual(
+                            ['@startuml',
+                            'interface Ray {',
+                            '    +start: Vector',
+                            '    +dir: Vector',
+                            '}',
+                            'interface Intersection {',
+                            '    +thing: Thing',
+                            '    +ray: Ray',
+                            '    +dist: number',
+                            '}',
+                            'interface Surface {',
+                            '    +diffuse: (pos: Vector) => Color',
+                            '    +specular: (pos: Vector) => Color',
+                            '    +reflect: (pos: Vector) => number',
+                            '    +roughness: number',
+                            '}',
+                            'interface Thing {',
+                            '    +intersect: (ray: Ray) => Intersection',
+                            '    +normal: (pos: Vector) => Vector',
+                            '    +surface: Surface',
+                            '    +destroy(): void',
+                            '    +destroy(name: string): void',
+                            '}',
+                            'interface Light {',
+                            '    +pos: Vector',
+                            '    +color: Color',
+                            '}',
+                            'interface Scene {',
+                            '    +things: Thing[]',
+                            '    +lights: Light[]',
+                            '    +camera: Camera',
+                            '}',
+                            'Intersection *-- Thing',
+                            'Intersection *-- Ray',
+                            'Thing *-- Ray',
+                            'Thing *-- Intersection',
+                            'Thing *-- Surface',
+                            'Scene *-- Thing',
+                            'Scene *-- Light',
+                            '@enduml'].join(os.EOL));
+                        });
+                    });
+                    
\ No newline at end of file
diff --git a/test/handbook.test.ts b/test/handbook.test.ts
new file mode 100644
index 0000000..15de077
--- /dev/null
+++ b/test/handbook.test.ts
@@ -0,0 +1,153 @@
+import * as os from 'os';
+import { tplant } from '../src/tplant';
+
+describe('Parse Handbook codes', () => {
+
+    it('generate PlantUML for Basic Types/BasicTypes.ts', () => {
+        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Handbook/Basic Types/BasicTypes.ts'])))
+            .toEqual(['@startuml',
+                'namespace BasicTypes {',
+                '    class Boolean {',
+                '        +isDone: boolean',
+                '    }',
+                '    class Number {',
+                '        +decimal: number',
+                '        +hex: number',
+                '        +binary: number',
+                '        +octal: number',
+                '    }',
+                '    class String {',
+                '        +color: string',
+                '        +color2: string',
+                '        +fullName: string',
+                '        +age: number',
+                '        +sentence: string',
+                '        +sentence2: string',
+                '    }',
+                '    class Array2 {',
+                '        +list: number[]',
+                '        +list2: number[]', // Suposed to be +list2: Array<number>
+                '    }',
+                '    class Tuple {',
+                '        +x: [string, number]',
+                '        +x2: (string | number)[]',
+                '        +x3: (string | number)[]',
+                '    }',
+                '    enum Color {',
+                '        Red',
+                '        Green',
+                '        Blue',
+                '    }',
+                '    enum Color2 {',
+                '        Red',
+                '        Green',
+                '        Blue',
+                '    }',
+                '    enum Color3 {',
+                '        Red',
+                '        Green',
+                '        Blue',
+                '    }',
+                '    enum Color4 {',
+                '        Red',
+                '        Green',
+                '        Blue',
+                '    }',
+                '    class Enum {',
+                '        +c: Color',
+                '        +c2: Color2',
+                '        +c3: Color3',
+                '        +colorName: string',
+                '    }',
+                '    class Any {',
+                '        +notSure: any',
+                '        +notSure2: string',
+                '        +notSure3: boolean',
+                '        +notSure4: any',
+                '        +list: any[]',
+                '    }',
+                '    class Void {',
+                '        +warnUser(): void',
+                '        +unusable: void',
+                '    }',
+                '    class NullAndUndefined {',
+                '        +u: undefined',
+                '        +n: null',
+                '    }',
+                '    class Never {',
+                '        +error(message: string): never',
+                '        +fail(): never',
+                '        +infiniteLoop(): never',
+                '    }',
+                '    interface Object {',
+                '        +create(o: object): void', // Issue #26 - Suposed to be +create(o: object | null): void
+                '    }',
+                '    class TypeAssertions {',
+                '        +someValue: any',
+                '        +strLength: number',
+                '        +someValue2: any',
+                '        +strLength2: number',
+                '    }',
+                '}',
+                '@enduml'].join(os.EOL));
+    });
+
+    it('generate PlantUML for Namespaces/Namespaces.ts', () => {
+        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Handbook/Namespaces/Namespaces.ts'])))
+            .toEqual(['@startuml',
+                'interface StringValidator {',
+                '    +isAcceptable(s: string): boolean',
+                '}',
+                'class LettersOnlyValidator implements StringValidator {',
+                '    +isAcceptable(s: string): boolean',
+                '}',
+                'class ZipCodeValidator implements StringValidator {',
+                '    +isAcceptable(s: string): boolean',
+                '}',
+                'namespace Validation {',
+                '    interface StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '    class LettersOnlyValidator implements StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '    class ZipCodeValidator implements StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '}',
+                'namespace Validation2 {',
+                '    interface StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '}',
+                'namespace Validation3 {',
+                '    class LettersOnlyValidator implements StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '}',
+                'namespace Validation4 {',
+                '    class ZipCodeValidator implements StringValidator {',
+                '        +isAcceptable(s: string): boolean',
+                '    }',
+                '}',
+                'namespace Shapes {',
+                '    namespace Polygons {',
+                '        class Triangle',
+                '        class Square',
+                '    }',
+                '}',
+                'namespace D3 {',
+                '    interface Selectors {',
+                '        +select: { (selector: string): Selection; (element: EventTarget): Selection; }',
+                '    }',
+                '    interface Event {',
+                '        +x: number',
+                '        +y: number',
+                '    }',
+                '    interface Base extends Selectors {',
+                '        +event: Event',
+                '    }',
+                '}',
+                '@enduml'].join(os.EOL));
+    });
+});
\ No newline at end of file
diff --git a/test/parser.spec.js b/test/parser.spec.js
deleted file mode 100644
index 0b415b7..0000000
--- a/test/parser.spec.js
+++ /dev/null
@@ -1,245 +0,0 @@
-const assert = require('assert');
-const os = require('os');
-const generateDocumentation = require("../dist/generateDocumentation");
-const convertToPlant = require("../dist/convertToPlant");
-
-describe("Parse Sample codes", () => {
-
-	it('generate PlantUML for Abstract/AbstractClass.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Abstract/AbstractClass.ts"])),
-			['@startuml',
-				'abstract class AbstractClass {',
-				'    +{abstract} ToTest(): any',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Classes/Greeter.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Classes/Greeter.ts"])),
-			['@startuml',
-				'class Greeter {',
-				'    +greeting: string',
-				'    +prefix: string',
-				'    +greet(prefix?: string): string',
-				'    +greet(): string',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Enum/Enum.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Enum/Enum.ts"])),
-			['@startuml',
-				'enum Semaphore {',
-				'    RED',
-				'    GREEN',
-				'    YELLOW',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Inheritance', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Inheritance/index.ts"])),
-			['@startuml',
-				'class Animal {',
-				'    +name: string',
-				'    +move(distanceInMeters?: number): void',
-				'}',
-				'class Horse extends Animal {',
-				'    +move(distanceInMeters?: number): void',
-				'}',
-				'class Snake extends Animal {',
-				'    +move(distanceInMeters?: number): void',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Generics/Complex.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Generics/Complex.ts"])),
-			['@startuml',
-				'interface GenericInterface<T extends string> {',
-				'    +method(arg: T): T',
-				'}',
-				'interface GenericInterface2<T extends string> {',
-				'    +property?: T',
-				'}',
-				'interface GenericInterface3<T extends string, A extends number> extends GenericInterface2 {',
-				'    +method2(arg: A): A',
-				'}',
-				'class GenericClass<T extends string, A extends number> implements GenericInterface, GenericInterface3 {',
-				'    +property?: T',
-				'    +method(arg: T): T',
-				'    +method2(arg: A): A',
-				'}',
-				'class GenericClass2<T extends string> implements GenericInterface2 {',
-				'    +property?: T',
-				'}',
-				'class ConcreteClass extends GenericClass implements GenericInterface, GenericInterface2 {',
-				'    +property: string',
-				'}',
-				'interface GenericTypes {',
-				'    +genericType: GenericClass<string, number>',
-				'    +genericType2: GenericClass2<string>',
-				'    +genericReturnType(): GenericInterface<string>',
-				'    +genericReturnType2(): GenericInterface3<string, number>',
-				'    +genericParameter(parameter: GenericInterface2<string>): void',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Generics/Greeter.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Generics/Greeter.ts"])),
-			['@startuml',
-				'class Greeter<T> {',
-				'    +greeting: T',
-				'    +greet(): T',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Generics/RecursiveGenericType.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Generics/RecursiveGenericType.ts"])),
-			['@startuml',
-				'interface FirstGeneric<T> {',
-				'    +index: T',
-				'}',
-				'interface SecondGeneric<T> {',
-				'    +index: T',
-				'}',
-				'interface ThirdGeneric<T> {',
-				'    +index: T',
-				'}',
-				'interface NormalInterface {',
-				'    +index: any',
-				'}',
-				'interface NormalInterface_2 {',
-				'    +index: any',
-				'}',
-				'interface RecursiveGenericType {',
-				'    +recursiveGenericType: string | number | FirstGeneric<SecondGeneric<ThirdGeneric<NormalInterface> | NormalInterface_2>>',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it('generate PlantUML for Inheritance/autos.ts', () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/Inheritance/autos.ts"])),
-			['@startuml',
-				'class Vehicle implements IVehicle {',
-				'    +color: string',
-				'    +start(type: string): string',
-				'}',
-				'interface IVehicle {',
-				'    +start(type: string): string',
-				'}',
-				'class Car extends Vehicle {',
-				'    +start(): string',
-				'}',
-				'interface ITrunk {',
-				'    +openTrunk(): void',
-				'}',
-				'interface IWindow {',
-				'    +openWindow(): void',
-				'}',
-				'class Sedan extends Car implements ITrunk, IWindow {',
-				'    +start(): string',
-				'    +openTrunk(): void',
-				'    +openWindow(): void',
-				'}',
-				'class Truck extends Vehicle {',
-				'    +start(): string',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-
-	it("generate PlantUML for RayTracer", () => {
-		assert.equal(convertToPlant.convertToPlant(generateDocumentation.generateDocumentation(["sample/RayTracer/index.ts"])),
-			['@startuml',
-				'class Vector {',
-				'    +x: number',
-				'    +y: number',
-				'    +z: number',
-				'    +{static} times(k: number, v: Vector): Vector',
-				'    +{static} minus(v1: Vector, v2: Vector): Vector',
-				'    +{static} plus(v1: Vector, v2: Vector): Vector',
-				'    +{static} dot(v1: Vector, v2: Vector): number',
-				'    +{static} mag(v: Vector): number',
-				'    +{static} norm(v: Vector): Vector',
-				'    +{static} cross(v1: Vector, v2: Vector): Vector',
-				'}',
-				'interface Ray {',
-				'    +start: Vector',
-				'    +dir: Vector',
-				'}',
-				'interface Intersection {',
-				'    +thing: Thing',
-				'    +ray: Ray',
-				'    +dist: number',
-				'}',
-				'class Color {',
-				'    +r: number',
-				'    +g: number',
-				'    +b: number',
-				'    +{static} scale(k: number, v: Color): Color',
-				'    +{static} plus(v1: Color, v2: Color): Color',
-				'    +{static} times(v1: Color, v2: Color): Color',
-				'    +{static} white: Color',
-				'    +{static} grey: Color',
-				'    +{static} black: Color',
-				'    +{static} background: Color',
-				'    +{static} defaultColor: Color',
-				'    +{static} toDrawingColor(c: Color): { r: number; g: number; b: number; }',
-				'}',
-				'interface Surface {',
-				'    +diffuse: (pos: Vector) => Color',
-				'    +specular: (pos: Vector) => Color',
-				'    +reflect: (pos: Vector) => number',
-				'    +roughness: number',
-				'}',
-				'interface Thing {',
-				'    +intersect: (ray: Ray) => Intersection',
-				'    +normal: (pos: Vector) => Vector',
-				'    +surface: Surface',
-				'    +destroy(): void',
-				'    +destroy(name: string): void',
-				'}',
-				'interface Light {',
-				'    +pos: Vector',
-				'    +color: Color',
-				'}',
-				'class Camera {',
-				'    +forward: Vector',
-				'    +right: Vector',
-				'    +up: Vector',
-				'    +pos: Vector',
-				'}',
-				'interface Scene {',
-				'    +things: Thing[]',
-				'    +lights: Light[]',
-				'    +camera: Camera',
-				'}',
-				'class Plane implements Thing {',
-				'    +normal: (pos: Vector) => Vector',
-				'    +intersect: (ray: Ray) => Intersection',
-				'    +surface: Surface',
-				'}',
-				'class Sphere implements Thing {',
-				'    +radius2: number',
-				'    +center: Vector',
-				'    +surface: Surface',
-				'    +normal(pos: Vector): Vector',
-				'    +intersect(ray: Ray): { thing: this; ray: Ray; dist: number; }',
-				'}',
-                'namespace Surfaces {',
-                '}',
-				'class RayTracer {',
-				'    -maxDepth: number',
-				'    -intersections(ray: Ray, scene: Scene): Intersection',
-				'    -testRay(ray: Ray, scene: Scene): number',
-				'    -traceRay(ray: Ray, scene: Scene, depth: number): Color',
-				'    -shade(isect: Intersection, scene: Scene, depth: number): Color',
-				'    -getReflectionColor(thing: Thing, pos: Vector, normal: Vector, rd: Vector, scene: Scene, depth: number): Color',
-				'    -getNaturalColor(thing: Thing, pos: Vector, norm: Vector, rd: Vector, scene: Scene): any',
-				'    +render(scene: any, ctx: any, screenWidth: any, screenHeight: any): void',
-				'}',
-				'@enduml'].join(os.EOL));
-	});
-});
diff --git a/test/playground.test.ts b/test/playground.test.ts
new file mode 100644
index 0000000..071ba7e
--- /dev/null
+++ b/test/playground.test.ts
@@ -0,0 +1,252 @@
+import * as os from 'os';
+import { tplant } from '../src/tplant';
+
+describe('Parse Playground codes', () => {
+    
+    it('generate PlantUML for Abstract/AbstractClass.ts', () => {
+        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Abstract/AbstractClass.ts'])))
+        .toEqual(
+            ['@startuml',
+            'abstract class AbstractClass {',
+            '    +{abstract} ToTest(): any',
+            '}',
+            '@enduml'].join(os.EOL)
+            );
+        });
+        
+        it('generate PlantUML for Classes/Greeter.ts', () => {
+            expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Classes/Greeter.ts'])))
+            .toEqual(
+                ['@startuml',
+                'class Greeter {',
+                '    +greeting: string',
+                '    +prefix: string',
+                '    +greet(prefix?: string): string',
+                '    +greet(): string',
+                '}',
+                '@enduml'].join(os.EOL));
+            });
+            
+            it('generate PlantUML for Enum/Enum.ts', () => {
+                expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Enum/Enum.ts'])))
+                .toEqual(
+                    ['@startuml',
+                    'enum Semaphore {',
+                    '    RED',
+                    '    GREEN',
+                    '    YELLOW',
+                    '}',
+                    '@enduml'].join(os.EOL));
+                });
+                
+                it('generate PlantUML for Inheritance', () => {
+                    expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Inheritance/index.ts'])))
+                    .toEqual(
+                        ['@startuml',
+                        'class Animal {',
+                        '    +name: string',
+                        '    +move(distanceInMeters?: number): void',
+                        '}',
+                        'class Horse extends Animal {',
+                        '    +move(distanceInMeters?: number): void',
+                        '}',
+                        'class Snake extends Animal {',
+                        '    +move(distanceInMeters?: number): void',
+                        '}',
+                        '@enduml'].join(os.EOL));
+                    });
+                    
+                    it('generate PlantUML for Generics/Complex.ts', () => {
+                        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Generics/Complex.ts'])))
+                        .toEqual(
+                            ['@startuml',
+                            'interface GenericInterface<T extends string> {',
+                            '    +method(arg: T): T',
+                            '}',
+                            'interface GenericInterface2<T extends string> {',
+                            '    +property?: T',
+                            '}',
+                            'interface GenericInterface3<T extends string, A extends number> extends GenericInterface2 {',
+                            '    +method2(arg: A): A',
+                            '}',
+                            'class GenericClass<T extends string, A extends number> implements GenericInterface, GenericInterface3 {',
+                            '    +property?: T',
+                            '    +method(arg: T): T',
+                            '    +method2(arg: A): A',
+                            '}',
+                            'class GenericClass2<T extends string> implements GenericInterface2 {',
+                            '    +property?: T',
+                            '}',
+                            'class ConcreteClass extends GenericClass implements GenericInterface, GenericInterface2 {',
+                            '    +property: string',
+                            '}',
+                            'interface GenericTypes {',
+                            '    +genericType: GenericClass<string, number>',
+                            '    +genericType2: GenericClass2<string>',
+                            '    +genericReturnType(): GenericInterface<string>',
+                            '    +genericReturnType2(): GenericInterface3<string, number>',
+                            '    +genericParameter(parameter: GenericInterface2<string>): void',
+                            '}',
+                            '@enduml'].join(os.EOL));
+                        });
+                        
+                        it('generate PlantUML for Generics/Greeter.ts', () => {
+                            expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Generics/Greeter.ts'])))
+                            .toEqual(
+                                ['@startuml',
+                                'class Greeter<T> {',
+                                '    +greeting: T',
+                                '    +greet(): T',
+                                '}',
+                                '@enduml'].join(os.EOL));
+                            });
+                            
+                            it('generate PlantUML for Generics/RecursiveGenericType.ts', () => {
+                                expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Generics/RecursiveGenericType.ts'])))
+                                .toEqual(
+                                    ['@startuml',
+                                    'interface FirstGeneric<T> {',
+                                    '    +index: T',
+                                    '}',
+                                    'interface SecondGeneric<T> {',
+                                    '    +index: T',
+                                    '}',
+                                    'interface ThirdGeneric<T> {',
+                                    '    +index: T',
+                                    '}',
+                                    'interface NormalInterface {',
+                                    '    +index: any',
+                                    '}',
+                                    'interface NormalInterface_2 {',
+                                    '    +index: any',
+                                    '}',
+                                    'interface RecursiveGenericType {',
+                                    '    +recursiveGenericType: string | number | FirstGeneric<SecondGeneric<ThirdGeneric<NormalInterface> | NormalInterface_2>>',
+                                    '}',
+                                    '@enduml'].join(os.EOL));
+                                });
+                                
+                                it('generate PlantUML for Inheritance/autos.ts', () => {
+                                    expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/Inheritance/autos.ts'])))
+                                    .toEqual(
+                                        ['@startuml',
+                                        'class Vehicle implements IVehicle {',
+                                        '    +color: string',
+                                        '    +start(type: string): string',
+                                        '}',
+                                        'interface IVehicle {',
+                                        '    +start(type: string): string',
+                                        '}',
+                                        'class Car extends Vehicle {',
+                                        '    +start(): string',
+                                        '}',
+                                        'interface ITrunk {',
+                                        '    +openTrunk(): void',
+                                        '}',
+                                        'interface IWindow {',
+                                        '    +openWindow(): void',
+                                        '}',
+                                        'class Sedan extends Car implements ITrunk, IWindow {',
+                                        '    +start(): string',
+                                        '    +openTrunk(): void',
+                                        '    +openWindow(): void',
+                                        '}',
+                                        'class Truck extends Vehicle {',
+                                        '    +start(): string',
+                                        '}',
+                                        '@enduml'].join(os.EOL));
+                                    });
+                                    
+                                    it('generate PlantUML for RayTracer', () => {
+                                        expect(tplant.convertToPlant(tplant.generateDocumentation(['test/Playground/RayTracer/index.ts'])))
+                                        .toEqual(
+                                            ['@startuml',
+                                            'class Vector {',
+                                            '    +x: number',
+                                            '    +y: number',
+                                            '    +z: number',
+                                            '    +{static} times(k: number, v: Vector): Vector',
+                                            '    +{static} minus(v1: Vector, v2: Vector): Vector',
+                                            '    +{static} plus(v1: Vector, v2: Vector): Vector',
+                                            '    +{static} dot(v1: Vector, v2: Vector): number',
+                                            '    +{static} mag(v: Vector): number',
+                                            '    +{static} norm(v: Vector): Vector',
+                                            '    +{static} cross(v1: Vector, v2: Vector): Vector',
+                                            '}',
+                                            'interface Ray {',
+                                            '    +start: Vector',
+                                            '    +dir: Vector',
+                                            '}',
+                                            'interface Intersection {',
+                                            '    +thing: Thing',
+                                            '    +ray: Ray',
+                                            '    +dist: number',
+                                            '}',
+                                            'class Color {',
+                                            '    +r: number',
+                                            '    +g: number',
+                                            '    +b: number',
+                                            '    +{static} scale(k: number, v: Color): Color',
+                                            '    +{static} plus(v1: Color, v2: Color): Color',
+                                            '    +{static} times(v1: Color, v2: Color): Color',
+                                            '    +{static} white: Color',
+                                            '    +{static} grey: Color',
+                                            '    +{static} black: Color',
+                                            '    +{static} background: Color',
+                                            '    +{static} defaultColor: Color',
+                                            '    +{static} toDrawingColor(c: Color): { r: number; g: number; b: number; }',
+                                            '}',
+                                            'interface Surface {',
+                                            '    +diffuse: (pos: Vector) => Color',
+                                            '    +specular: (pos: Vector) => Color',
+                                            '    +reflect: (pos: Vector) => number',
+                                            '    +roughness: number',
+                                            '}',
+                                            'interface Thing {',
+                                            '    +intersect: (ray: Ray) => Intersection',
+                                            '    +normal: (pos: Vector) => Vector',
+                                            '    +surface: Surface',
+                                            '    +destroy(): void',
+                                            '    +destroy(name: string): void',
+                                            '}',
+                                            'interface Light {',
+                                            '    +pos: Vector',
+                                            '    +color: Color',
+                                            '}',
+                                            'class Camera {',
+                                            '    +forward: Vector',
+                                            '    +right: Vector',
+                                            '    +up: Vector',
+                                            '    +pos: Vector',
+                                            '}',
+                                            'interface Scene {',
+                                            '    +things: Thing[]',
+                                            '    +lights: Light[]',
+                                            '    +camera: Camera',
+                                            '}',
+                                            'class Plane implements Thing {',
+                                            '    +normal: (pos: Vector) => Vector',
+                                            '    +intersect: (ray: Ray) => Intersection',
+                                            '    +surface: Surface',
+                                            '}',
+                                            'class Sphere implements Thing {',
+                                            '    +radius2: number',
+                                            '    +center: Vector',
+                                            '    +surface: Surface',
+                                            '    +normal(pos: Vector): Vector',
+                                            '    +intersect(ray: Ray): { thing: this; ray: Ray; dist: number; }',
+                                            '}',
+                                            'namespace Surfaces',
+                                            'class RayTracer {',
+                                            '    -maxDepth: number',
+                                            '    -intersections(ray: Ray, scene: Scene): Intersection',
+                                            '    -testRay(ray: Ray, scene: Scene): number',
+                                            '    -traceRay(ray: Ray, scene: Scene, depth: number): Color',
+                                            '    -shade(isect: Intersection, scene: Scene, depth: number): Color',
+                                            '    -getReflectionColor(thing: Thing, pos: Vector, normal: Vector, rd: Vector, scene: Scene, depth: number): Color',
+                                            '    -getNaturalColor(thing: Thing, pos: Vector, norm: Vector, rd: Vector, scene: Scene): any',
+                                            '    +render(scene: any, ctx: any, screenWidth: any, screenHeight: any): void',
+                                            '}',
+                                            '@enduml'].join(os.EOL));
+                                        });
+                                    });
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index fd8e56d..d13a376 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -23,16 +23,16 @@
     "strict": true,                          /* Enable all strict type-checking options. */
     "noImplicitAny": true,                   /* Raise error on expressions and declarations with an implied 'any' type. */
     "strictNullChecks": true,                /* Enable strict null checks. */
-    // "strictFunctionTypes": true,          /* Enable strict checking of function types. */
-    // "strictBindCallApply": true,          /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
-    // "noImplicitThis": true,               /* Raise error on 'this' expressions with an implied 'any' type. */
-    // "alwaysStrict": true,                 /* Parse in strict mode and emit "use strict" for each source file. */
+    "strictFunctionTypes": true,             /* Enable strict checking of function types. */
+    "strictBindCallApply": true,             /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    "strictPropertyInitialization": true,    /* Enable strict checking of property initialization in classes. */
+    "noImplicitThis": true,                  /* Raise error on 'this' expressions with an implied 'any' type. */
+    "alwaysStrict": true,                    /* Parse in strict mode and emit "use strict" for each source file. */
     /* Additional Checks */
-    // "noUnusedLocals": true,               /* Report errors on unused locals. */
-    // "noUnusedParameters": true,           /* Report errors on unused parameters. */
-    // "noImplicitReturns": true,            /* Report error when not all code paths in function return a value. */
-    // "noFallthroughCasesInSwitch": true,   /* Report errors for fallthrough cases in switch statement. */
+    "noUnusedLocals": true,                  /* Report errors on unused locals. */
+    "noUnusedParameters": true,              /* Report errors on unused parameters. */
+    "noImplicitReturns": true,               /* Report error when not all code paths in function return a value. */
+    "noFallthroughCasesInSwitch": true,      /* Report errors for fallthrough cases in switch statement. */
     /* Module Resolution Options */
     // "moduleResolution": "node",           /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
     // "baseUrl": "./",                      /* Base directory to resolve non-absolute module names. */
diff --git a/tslint.json b/tslint.json
index 3b1ee12..f395a03 100644
--- a/tslint.json
+++ b/tslint.json
@@ -1,18 +1,9 @@
 {
-    "defaultSeverity": "error",
     "extends": [
         "tslint:recommended",
         "tslint-microsoft-contrib"
     ],
-    "jsRules": {},
     "rules": {
-        "export-name": false,
-        "no-console": false,
-        "no-relative-imports": [
-            true,
-            "allow-siblings"
-        ],
-        "no-reserved-keywords": false
-    },
-    "rulesDirectory": []
+        "no-relative-imports": false
+    }
 }