25 lines
625 B
JavaScript
25 lines
625 B
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var GetIntrinsic = require('get-intrinsic');
|
||
|
|
var callBound = require('call-bind/callBound');
|
||
|
|
|
||
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
||
|
|
var $deref = callBound('WeakRef.prototype.deref', true);
|
||
|
|
|
||
|
|
var isWeakRef = require('is-weakref');
|
||
|
|
|
||
|
|
var AddToKeptObjects = require('./AddToKeptObjects');
|
||
|
|
|
||
|
|
// https://ecma-international.org/ecma-262/12.0/#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;
|
||
|
|
};
|