lix-website/themes/lix/assets/bootstrap/node_modules/es-abstract/2021/WeakRefDeref.js
2024-04-26 22:49:34 -06:00

24 lines
573 B
JavaScript

'use strict';
var callBound = require('call-bind/callBound');
var $TypeError = require('es-errors/type');
var $deref = callBound('WeakRef.prototype.deref', true);
var isWeakRef = require('is-weakref');
var AddToKeptObjects = require('./AddToKeptObjects');
// https://262.ecma-international.org/12.0/#sec-weakrefderef
module.exports = function WeakRefDeref(weakRef) {
if (!isWeakRef(weakRef)) {
throw new $TypeError('Assertion failed: `weakRef` must be a WeakRef');
}
var target = $deref(weakRef);
if (target) {
AddToKeptObjects(target);
}
return target;
};