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Edit File: standard-symbols.js

"use strict";

var d            = require("d")
  , NativeSymbol = require("ext/global-this").Symbol;

module.exports = function (SymbolPolyfill) {
	return Object.defineProperties(SymbolPolyfill, {
		// To ensure proper interoperability with other native functions (e.g. Array.from)
		// fallback to eventual native implementation of given symbol
		hasInstance: d(
			"", (NativeSymbol && NativeSymbol.hasInstance) || SymbolPolyfill("hasInstance")
		),
		isConcatSpreadable: d(
			"",
			(NativeSymbol && NativeSymbol.isConcatSpreadable) ||
				SymbolPolyfill("isConcatSpreadable")
		),
		iterator: d("", (NativeSymbol && NativeSymbol.iterator) || SymbolPolyfill("iterator")),
		match: d("", (NativeSymbol && NativeSymbol.match) || SymbolPolyfill("match")),
		replace: d("", (NativeSymbol && NativeSymbol.replace) || SymbolPolyfill("replace")),
		search: d("", (NativeSymbol && NativeSymbol.search) || SymbolPolyfill("search")),
		species: d("", (NativeSymbol && NativeSymbol.species) || SymbolPolyfill("species")),
		split: d("", (NativeSymbol && NativeSymbol.split) || SymbolPolyfill("split")),
		toPrimitive: d(
			"", (NativeSymbol && NativeSymbol.toPrimitive) || SymbolPolyfill("toPrimitive")
		),
		toStringTag: d(
			"", (NativeSymbol && NativeSymbol.toStringTag) || SymbolPolyfill("toStringTag")
		),
		unscopables: d(
			"", (NativeSymbol && NativeSymbol.unscopables) || SymbolPolyfill("unscopables")
		)
	});
};

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