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TypeScript

/**
* Copyright 2024 Adobe Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test, expect } from './pageTest';
test('should work', async ({ page }) => {
await page.evaluate(() => {
globalThis.objectToDestroy = { hello: 'world' };
globalThis.weakRef = new WeakRef(globalThis.objectToDestroy);
});
await page.requestGC();
expect(await page.evaluate(() => globalThis.weakRef.deref())).toEqual({ hello: 'world' });
await page.requestGC();
expect(await page.evaluate(() => globalThis.weakRef.deref())).toEqual({ hello: 'world' });
await page.evaluate(() => globalThis.objectToDestroy = null);
await page.requestGC();
expect(await page.evaluate(() => globalThis.weakRef.deref())).toBe(undefined);
});
test('should collect element retained by locator hit-target interceptor after detach', async ({ page, browserName }) => {
test.fixme(browserName === 'firefox', 'Firefox hit-target interceptor does not release its element reference on detach');
test.fixme(browserName === 'chromium', 'Chromium retains a native reference to the last hit-tested element; fix pending upstream discussion, see #41575');
await page.setContent('<button id="btn">click me</button>');
await page.locator('#btn').click();
await page.evaluate(() => {
globalThis.weakRef = new WeakRef(document.getElementById('btn')!);
document.getElementById('btn')!.remove();
});
await page.requestGC();
expect(await page.evaluate(() => globalThis.weakRef.deref())).toBe(undefined);
});