var $ = require('../internals/export'); var isIntegralNumber = require('../internals/is-integral-number'); var abs = Math.abs; // `Number.isSafeInteger` method // https://tc39.es/ecma262/#sec-number.issafeinteger $({ target: 'Number', stat: true }, { isSafeInteger: function isSafeInteger(number) { return isIntegralNumber(number) && abs(number) <= 0x1FFFFFFFFFFFFF; } });