/home/techb158/balavpn.abdallabala.com/node_modules/is-weakmap
Edit: /home/techb158/balavpn.abdallabala.com/node_modules/is-weakmap/index.js (1157B)
'use strict';
var $WeakMap = typeof WeakMap === 'function' && WeakMap.prototype ? WeakMap : null;
var $WeakSet = typeof WeakSet === 'function' && WeakSet.prototype ? WeakSet : null;
var exported;
if (!$WeakMap) {
/** @type {import('.')} */
// eslint-disable-next-line no-unused-vars
exported = function isWeakMap(x) {
// `WeakMap` is not present in this environment.
return false;
};
}
var $mapHas = $WeakMap ? $WeakMap.prototype.has : null;
var $setHas = $WeakSet ? $WeakSet.prototype.has : null;
if (!exported && !$mapHas) {
/** @type {import('.')} */
// eslint-disable-next-line no-unused-vars
exported = function isWeakMap(x) {
// `WeakMap` does not have a `has` method
return false;
};
}
/** @type {import('.')} */
module.exports = exported || function isWeakMap(x) {
if (!x || typeof x !== 'object') {
return false;
}
try {
$mapHas.call(x, $mapHas);
if ($setHas) {
try {
$setHas.call(x, $setHas);
} catch (e) {
return true;
}
}
// @ts-expect-error TS can't figure out that $WeakMap is always truthy here
return x instanceof $WeakMap; // core-js workaround, pre-v3
} catch (e) {}
return false;
};