9 lines
275 B
JavaScript
Vendored
9 lines
275 B
JavaScript
Vendored
// Exports true if environment provides native `WeakMap` implementation, whatever that is.
|
|
|
|
'use strict';
|
|
|
|
module.exports = (function () {
|
|
if (typeof WeakMap !== 'function') return false;
|
|
return (Object.prototype.toString.call(new WeakMap()) === '[object WeakMap]');
|
|
}());
|