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