map-tojson/requireMap.js

ES7 Proposal: Map#toJSON https://github.com/DavidBruant/Map-Set.prototype.toJSON

'use strict';

var GetIntrinsic = require('es-abstract/GetIntrinsic');
var $Map = GetIntrinsic('%Map%', true);
var $TypeError = GetIntrinsic('%TypeError%');

module.exports = function requireGlobalMap() {
	if (!$Map) {
		throw new $TypeError('Map.prototype.toJSON requires Map (either native, or polyfilled with es6-shim)');
	}
};