71 lines
2.1 KiB
TypeScript
71 lines
2.1 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import type * as playwright from 'playwright';
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export async function waitForCompletion<R>(page: playwright.Page, callback: () => Promise<R>): Promise<R> {
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const requests = new Set<playwright.Request>();
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let frameNavigated = false;
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let waitCallback: () => void = () => {};
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const waitBarrier = new Promise<void>(f => { waitCallback = f; });
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const requestListener = (request: playwright.Request) => requests.add(request);
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const requestFinishedListener = (request: playwright.Request) => {
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requests.delete(request);
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if (!requests.size)
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waitCallback();
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};
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const frameNavigateListener = (frame: playwright.Frame) => {
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if (frame.parentFrame())
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return;
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frameNavigated = true;
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dispose();
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clearTimeout(timeout);
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void frame.waitForLoadState('load').then(() => {
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waitCallback();
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});
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};
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const onTimeout = () => {
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dispose();
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waitCallback();
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};
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page.on('request', requestListener);
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page.on('requestfinished', requestFinishedListener);
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page.on('framenavigated', frameNavigateListener);
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const timeout = setTimeout(onTimeout, 10000);
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const dispose = () => {
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page.off('request', requestListener);
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page.off('requestfinished', requestFinishedListener);
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page.off('framenavigated', frameNavigateListener);
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clearTimeout(timeout);
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};
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try {
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const result = await callback();
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if (!requests.size && !frameNavigated)
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waitCallback();
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await waitBarrier;
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await page.evaluate(() => new Promise(f => setTimeout(f, 1000)));
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return result;
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} finally {
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dispose();
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}
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}
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