/home/techb158/balavpn.abdallabala.com/node_modules/is-weakset
Edit: /home/techb158/balavpn.abdallabala.com/node_modules/is-weakset/index.js (1254B)
'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bound');
var $WeakSet = GetIntrinsic('%WeakSet%', true);
/** @type {undefined | (
(thisArg: Set, value: V) => boolean)} */
var $setHas = callBound('WeakSet.prototype.has', true);
if ($setHas) {
/** @type {undefined | ((thisArg: WeakMap, key: K) => boolean)} */
var $mapHas = callBound('WeakMap.prototype.has', true);
/** @type {import('.')} */
module.exports = function isWeakSet(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
// @ts-expect-error TS can't figure out that $setHas is always truthy here
$setHas(x, $setHas);
if ($mapHas) {
try {
// @ts-expect-error this indeed might not be a weak collection
$mapHas(x, $mapHas);
} catch (e) {
return true;
}
}
// @ts-expect-error TS can't figure out that $WeakSet is always truthy here
return x instanceof $WeakSet; // core-js workaround, pre-v3
} catch (e) {}
return false;
};
} else {
/** @type {import('.')} */
// @ts-expect-error
module.exports = function isWeakSet(x) { // eslint-disable-line no-unused-vars
// `WeakSet` does not exist, or does not have a `has` method
return false;
};
}