1 files changed, 0 insertions, 38 deletions
diff --git a/node_modules/fbjs/lib/_shouldPolyfillES6Collection.js.flow b/node_modules/fbjs/lib/_shouldPolyfillES6Collection.js.flow
deleted file mode 100644
index 672b5f1fb..000000000
--- a/node_modules/fbjs/lib/_shouldPolyfillES6Collection.js.flow
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @providesModule _shouldPolyfillES6Collection
- * @preventMunge
- * @flow
- */
-
-/**
- * Checks whether a collection name (e.g. "Map" or "Set") has a native polyfill
- * that is safe to be used.
- */
-function shouldPolyfillES6Collection(collectionName: string): boolean {
-  const Collection = global[collectionName];
-  if (Collection == null) {
-    return true;
-  }
-
-  // The iterator protocol depends on `Symbol.iterator`. If a collection is
-  // implemented, but `Symbol` is not, it's going to break iteration because
-  // we'll be using custom "@@iterator" instead, which is not implemented on
-  // native collections.
-  if (typeof global.Symbol !== 'function') {
-    return true;
-  }
-
-  const proto = Collection.prototype;
-
-  // These checks are adapted from es6-shim: https://fburl.com/34437854
-  // NOTE: `isCallableWithoutNew` and `!supportsSubclassing` are not checked
-  // because they make debugging with "break on exceptions" difficult.
-  return Collection == null || typeof Collection !== 'function' || typeof proto.clear !== 'function' || new Collection().size !== 0 || typeof proto.keys !== 'function' || typeof proto.forEach !== 'function';
-}
-
-module.exports = shouldPolyfillES6Collection;
-\ No newline at end of file