Support flow type variance (#240)

Author: elicwhite

package.json

@@ -38,7 +38,7 @@
     "commander": "^2.9.0",
     "doctrine": "^2.0.0",
     "node-dir": "^0.1.10",
-    "recast": "^0.12.6"
+    "recast": "^0.13.0"
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",

src/__tests__/__snapshots__/main-test.js.snap

@@ -260,3 +260,27 @@ Object {
   },
 }
 `;
+
+exports[`main fixtures processes component "component_11.js" without errors 1`] = `
+Object {
+  "description": "",
+  "displayName": "MyComponent",
+  "methods": Array [],
+  "props": Object {
+    "prop1": Object {
+      "description": "The first prop",
+      "flowType": Object {
+        "name": "string",
+      },
+      "required": true,
+    },
+    "prop2": Object {
+      "description": "The second, covariant prop",
+      "flowType": Object {
+        "name": "number",
+      },
+      "required": true,
+    },
+  },
+}
+`;

src/__tests__/fixtures/component_11.js

@@ -0,0 +1,35 @@
+/*
+ *  Copyright (c) 2015, Facebook, Inc.
+ *  All rights reserved.
+ *
+ *  This source code is licensed under the BSD-style license found in the
+ *  LICENSE file in the root directory of this source tree. An additional grant
+ *  of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
+
+/**
+ * Testing component using Flow
+ */
+
+import React from 'react';
+
+type Props = {|
+  /**
+   * The first prop
+   */
+  prop1: string,
+
+  /**
+   * The second, covariant prop
+   */
+  +prop2: number
+|}
+
+class MyComponent extends React.Component<Props> {
+  render() {
+    return null;
+  }
+}
+
+export default MyComponent;

yarn.lock

@@ -215,9 +215,9 @@ assert-plus@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.2.0.tgz#d74e1b87e7affc0db8aadb7021f3fe48101ab234"
 
-ast-types@0.9.14:
-  version "0.9.14"
-  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.14.tgz#d34ba5dffb9d15a44351fd2a9d82e4ab2838b5ba"
+ast-types@0.10.1:
+  version "0.10.1"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.10.1.tgz#f52fca9715579a14f841d67d7f8d25432ab6a3dd"
 
 astral-regex@^1.0.0:
   version "1.0.0"
@@ -1045,7 +1045,7 @@ convert-source-map@^1.4.0, convert-source-map@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.0.tgz#9acd70851c6d5dfdd93d9282e5edf94a03ff46b5"
 
-core-js@^2.4.0, core-js@^2.4.1, core-js@^2.5.0:
+core-js@^2.4.0, core-js@^2.5.0:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.1.tgz#ae6874dc66937789b80754ff5428df66819ca50b"
 
@@ -2793,12 +2793,11 @@ readdirp@^2.0.0:
     readable-stream "^2.0.2"
     set-immediate-shim "^1.0.1"
 
-recast@^0.12.6:
-  version "0.12.8"
-  resolved "https://registry.yarnpkg.com/recast/-/recast-0.12.8.tgz#bb5dc9501dfa0cd075686e1daf9d67797cc5499f"
+recast@^0.13.0:
+  version "0.13.0"
+  resolved "https://registry.yarnpkg.com/recast/-/recast-0.13.0.tgz#a343a394a37d24668d700f88ed04b8d2c314d40d"
   dependencies:
-    ast-types "0.9.14"
-    core-js "^2.4.1"
+    ast-types "0.10.1"
     esprima "~4.0.0"
     private "~0.1.5"
     source-map "~0.6.1"