initial commit

node_modules/jstransform/visitors/reserved-words-helper.js

@@ -0,0 +1,67 @@
+/**
+ * Copyright 2013-present, 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.
+ */
+
+var KEYWORDS = [
+  'break', 'do', 'in', 'typeof', 'case', 'else', 'instanceof', 'var', 'catch',
+  'export', 'new', 'void', 'class', 'extends', 'return', 'while', 'const',
+  'finally', 'super', 'with', 'continue', 'for', 'switch', 'yield', 'debugger',
+  'function', 'this', 'default', 'if', 'throw', 'delete', 'import', 'try'
+];
+
+var FUTURE_RESERVED_WORDS = [
+  'enum', 'await', 'implements', 'package', 'protected', 'static', 'interface',
+  'private', 'public'
+];
+
+var LITERALS = [
+  'null',
+  'true',
+  'false'
+];
+
+// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-reserved-words
+var RESERVED_WORDS = [].concat(
+  KEYWORDS,
+  FUTURE_RESERVED_WORDS,
+  LITERALS
+);
+
+var reservedWordsMap = Object.create(null);
+RESERVED_WORDS.forEach(function(k) {
+    reservedWordsMap[k] = true;
+});
+
+/**
+ * This list should not grow as new reserved words are introdued. This list is
+ * of words that need to be quoted because ES3-ish browsers do not allow their
+ * use as identifier names.
+ */
+var ES3_FUTURE_RESERVED_WORDS = [
+  'enum', 'implements', 'package', 'protected', 'static', 'interface',
+  'private', 'public'
+];
+
+var ES3_RESERVED_WORDS = [].concat(
+  KEYWORDS,
+  ES3_FUTURE_RESERVED_WORDS,
+  LITERALS
+);
+
+var es3ReservedWordsMap = Object.create(null);
+ES3_RESERVED_WORDS.forEach(function(k) {
+    es3ReservedWordsMap[k] = true;
+});
+
+exports.isReservedWord = function(word) {
+  return !!reservedWordsMap[word];
+};
+
+exports.isES3ReservedWord = function(word) {
+  return !!es3ReservedWordsMap[word];
+};