Current Dev State

static/js/ketcher2/node_modules/es6-weak-map/polyfill.js

@@ -0,0 +1,66 @@
+'use strict';
+
+var setPrototypeOf    = require('es5-ext/object/set-prototype-of')
+  , object            = require('es5-ext/object/valid-object')
+  , value             = require('es5-ext/object/valid-value')
+  , randomUniq        = require('es5-ext/string/random-uniq')
+  , d                 = require('d')
+  , getIterator       = require('es6-iterator/get')
+  , forOf             = require('es6-iterator/for-of')
+  , toStringTagSymbol = require('es6-symbol').toStringTag
+  , isNative          = require('./is-native-implemented')
+
+  , isArray = Array.isArray, defineProperty = Object.defineProperty
+  , hasOwnProperty = Object.prototype.hasOwnProperty, getPrototypeOf = Object.getPrototypeOf
+  , WeakMapPoly;
+
+module.exports = WeakMapPoly = function (/*iterable*/) {
+	var iterable = arguments[0], self;
+	if (!(this instanceof WeakMapPoly)) throw new TypeError('Constructor requires \'new\'');
+	if (isNative && setPrototypeOf && (WeakMap !== WeakMapPoly)) {
+		self = setPrototypeOf(new WeakMap(), getPrototypeOf(this));
+	} else {
+		self = this;
+	}
+	if (iterable != null) {
+		if (!isArray(iterable)) iterable = getIterator(iterable);
+	}
+	defineProperty(self, '__weakMapData__', d('c', '$weakMap$' + randomUniq()));
+	if (!iterable) return self;
+	forOf(iterable, function (val) {
+		value(val);
+		self.set(val[0], val[1]);
+	});
+	return self;
+};
+
+if (isNative) {
+	if (setPrototypeOf) setPrototypeOf(WeakMapPoly, WeakMap);
+	WeakMapPoly.prototype = Object.create(WeakMap.prototype, {
+		constructor: d(WeakMapPoly)
+	});
+}
+
+Object.defineProperties(WeakMapPoly.prototype, {
+	delete: d(function (key) {
+		if (hasOwnProperty.call(object(key), this.__weakMapData__)) {
+			delete key[this.__weakMapData__];
+			return true;
+		}
+		return false;
+	}),
+	get: d(function (key) {
+		if (hasOwnProperty.call(object(key), this.__weakMapData__)) {
+			return key[this.__weakMapData__];
+		}
+	}),
+	has: d(function (key) {
+		return hasOwnProperty.call(object(key), this.__weakMapData__);
+	}),
+	set: d(function (key, value) {
+		defineProperty(object(key), this.__weakMapData__, d('c', value));
+		return this;
+	}),
+	toString: d(function () { return '[object WeakMap]'; })
+});
+defineProperty(WeakMapPoly.prototype, toStringTagSymbol, d('c', 'WeakMap'));