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flights_web_raw/ClientApp/node_modules/is-weakset/index.js
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gnezim 0a5ab058a6 Initial commit: Aeroflot Flights Web - Angular 12 baseline
- Angular 12 application with PrimeNG components
- 5 existing Cypress e2e test suites
- SCSS styling with BEM naming convention
- i18n support (10 languages)
- Leaflet map integration
- Complete component hierarchy and routing structure

This baseline will be used for Angular → React migration.
2026-04-05 18:47:57 +03:00

44 lines
1.2 KiB
JavaScript

'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bound');
var $WeakSet = GetIntrinsic('%WeakSet%', true);
/** @type {undefined | (<V>(thisArg: Set<V>, value: V) => boolean)} */
var $setHas = callBound('WeakSet.prototype.has', true);
if ($setHas) {
/** @type {undefined | (<K extends object, V>(thisArg: WeakMap<K, V>, 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;
};
}