Add support for declare module.exports (#72)

* Add support for declare module.exports

* Use doublequotes

* Use expect instead of eat

src/plugins/flow.js

@@ -66,7 +66,11 @@ pp.flowParseDeclare = function (node) {
   } else if (this.match(tt._var)) {
     return this.flowParseDeclareVariable(node);
   } else if (this.isContextual("module")) {
-    return this.flowParseDeclareModule(node);
+    if (this.lookahead().type === tt.dot) {
+      return this.flowParseDeclareModuleExports(node);
+    } else {
+      return this.flowParseDeclareModule(node);
+    }
   } else if (this.isContextual("type")) {
     return this.flowParseDeclareTypeAlias(node);
   } else if (this.isContextual("interface")) {
@@ -109,6 +113,14 @@ pp.flowParseDeclareModule = function (node) {
   return this.finishNode(node, "DeclareModule");
 };
 
+pp.flowParseDeclareModuleExports = function (node) {
+  this.expectContextual("module");
+  this.expect(tt.dot);
+  this.expectContextual("exports");
+  node.typeAnnotation = this.flowParseTypeAnnotation();
+  return this.finishNode(node, "DeclareModuleExports");
+};
+
 pp.flowParseDeclareTypeAlias = function (node) {
   this.next();
   this.flowParseTypeAlias(node);

test/fixtures/flow/declare-module/6/actual.js

@@ -0,0 +1 @@
+declare module A { declare module.exports: { foo(): number; } }

test/fixtures/flow/declare-module/6/expected.json

@@ -0,0 +1,196 @@
+{
+  "type": "File",
+  "start": 0,
+  "end": 63,
+  "loc": {
+    "start": {
+      "line": 1,
+      "column": 0
+    },
+    "end": {
+      "line": 1,
+      "column": 63
+    }
+  },
+  "program": {
+    "type": "Program",
+    "start": 0,
+    "end": 63,
+    "loc": {
+      "start": {
+        "line": 1,
+        "column": 0
+      },
+      "end": {
+        "line": 1,
+        "column": 63
+      }
+    },
+    "sourceType": "module",
+    "body": [
+      {
+        "type": "DeclareModule",
+        "start": 0,
+        "end": 63,
+        "loc": {
+          "start": {
+            "line": 1,
+            "column": 0
+          },
+          "end": {
+            "line": 1,
+            "column": 63
+          }
+        },
+        "id": {
+          "type": "Identifier",
+          "start": 15,
+          "end": 16,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 15
+            },
+            "end": {
+              "line": 1,
+              "column": 16
+            }
+          },
+          "name": "A"
+        },
+        "body": {
+          "type": "BlockStatement",
+          "start": 17,
+          "end": 63,
+          "loc": {
+            "start": {
+              "line": 1,
+              "column": 17
+            },
+            "end": {
+              "line": 1,
+              "column": 63
+            }
+          },
+          "body": [
+            {
+              "type": "DeclareModuleExports",
+              "start": 19,
+              "end": 61,
+              "loc": {
+                "start": {
+                  "line": 1,
+                  "column": 19
+                },
+                "end": {
+                  "line": 1,
+                  "column": 61
+                }
+              },
+              "typeAnnotation": {
+                "type": "TypeAnnotation",
+                "start": 41,
+                "end": 61,
+                "loc": {
+                  "start": {
+                    "line": 1,
+                    "column": 41
+                  },
+                  "end": {
+                    "line": 1,
+                    "column": 61
+                  }
+                },
+                "typeAnnotation": {
+                  "type": "ObjectTypeAnnotation",
+                  "start": 43,
+                  "end": 61,
+                  "loc": {
+                    "start": {
+                      "line": 1,
+                      "column": 43
+                    },
+                    "end": {
+                      "line": 1,
+                      "column": 61
+                    }
+                  },
+                  "callProperties": [],
+                  "properties": [
+                    {
+                      "type": "ObjectTypeProperty",
+                      "start": 45,
+                      "end": 59,
+                      "loc": {
+                        "start": {
+                          "line": 1,
+                          "column": 45
+                        },
+                        "end": {
+                          "line": 1,
+                          "column": 59
+                        }
+                      },
+                      "value": {
+                        "type": "FunctionTypeAnnotation",
+                        "start": 45,
+                        "end": 58,
+                        "loc": {
+                          "start": {
+                            "line": 1,
+                            "column": 45
+                          },
+                          "end": {
+                            "line": 1,
+                            "column": 58
+                          }
+                        },
+                        "params": [],
+                        "rest": null,
+                        "typeParameters": null,
+                        "returnType": {
+                          "type": "NumberTypeAnnotation",
+                          "start": 52,
+                          "end": 58,
+                          "loc": {
+                            "start": {
+                              "line": 1,
+                              "column": 52
+                            },
+                            "end": {
+                              "line": 1,
+                              "column": 58
+                            }
+                          }
+                        }
+                      },
+                      "key": {
+                        "type": "Identifier",
+                        "start": 45,
+                        "end": 48,
+                        "loc": {
+                          "start": {
+                            "line": 1,
+                            "column": 45
+                          },
+                          "end": {
+                            "line": 1,
+                            "column": 48
+                          }
+                        },
+                        "name": "foo"
+                      },
+                      "optional": false
+                    }
+                  ],
+                  "indexers": []
+                }
+              }
+            }
+          ]
+        }
+      }
+    ],
+    "directives": []
+  }
+}

test/fixtures/flow/declare-module/7/actual.js

@@ -0,0 +1 @@
+declare module A { declare module.foo: { foo(): number; } }

test/fixtures/flow/declare-module/7/options.json

@@ -0,0 +1,3 @@
+{
+  "throws": "Unexpected token (1:34)"
+}