feat(TypeScript): Generate TS declarations & export theme names

package.json

@@ -8,7 +8,7 @@
   "main": "./dist/index.js",
   "scripts": {
     "dev": "parcel ./src/demo/index.html --open",
-    "build": "parcel build ./src/**/*.css ./src/**/*.ts",
+    "build": "parcel build ./src/**/*.css ./src/**/*.ts && tsc --emitDeclarationOnly",
     "watch": "parcel watch ./src/**/*.css ./src/**/*.ts",
     "pages": "parcel build ./src/demo/index.html -d pages  --public-url .",
     "semantic-release": "semantic-release"
@@ -33,6 +33,7 @@
     "@abide-community/parcel-plugin-clean-out-dir": "^1.0.0",
     "@babel/core": "^7.5.5",
     "@stencila/dev-config": "^1.1.2",
+    "@types/prismjs": "^1.16.0",
     "autoprefixer": "^9.6.1",
     "normalize.css": "^8.0.1",
     "parcel-bundler": "^1.12.3",

src/index.ts

@@ -1,6 +1,24 @@
 export const themes = {
-  eLife: 'themes/eLife',
-  nature: 'themes/nature',
-  plos: 'themes/plos',
-  stencila: 'themes/stencila'
+  elife: 'eLife' as const,
+  nature: 'nature' as const,
+  plos: 'plos' as const,
+  stencila: 'stencila' as const
+}
+
+type Themes = typeof themes
+export type ThemeNames = Themes[keyof Themes]
+
+export const themePath = 'dist/themes'
+
+const themeNameGuard = (s: string): s is keyof Themes =>
+  s.toLowerCase() in themes
+
+/**
+ * Given a string, will attempt to return a matching Thema theme, falling back to Stencila in case none is found
+ * @param {string} name Name of the theme to look for
+ */
+export const getTheme = (name?: string): ThemeNames => {
+  return name !== undefined && themeNameGuard(name)
+    ? themes[name]
+    : themes.stencila
 }

tsconfig.json

@@ -3,6 +3,7 @@
   "include": ["src"],
   "exclude": ["node_modules"],
   "compilerOptions": {
+    "outDir": "dist",
     "lib": ["dom", "es2017"]
   }
 }