is-native-implemented.js 263 Bytes RawBlameHistoryPermalink 1 2 3 4 5 6 7 8 9 // Exports true if environment provides native `Map` implementation, // whatever that is. 'use strict'; module.exports = (function () { if (typeof Map === 'undefined') return false; return (Object.prototype.toString.call(new Map()) === '[object Map]'); }());