puppeteer/install.js

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/**
* Copyright 2017 Google 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.
*/
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const Downloader = require('./utils/ChromiumDownloader');
const revision = require('./package').puppeteer.chromium_revision;
const ProgressBar = require('progress');
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// Do nothing if the revision is already downloaded.
if (Downloader.revisionInfo(Downloader.currentPlatform(), revision))
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return;
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let allRevisions = Downloader.downloadedRevisions();
Downloader.downloadRevision(Downloader.currentPlatform(), revision, onProgress)
// Remove previous chromium revisions.
.then(() => Promise.all(allRevisions.map(({platform, revision}) => Downloader.removeRevision(platform, revision))))
.catch(error => console.error('Download failed: ' + error.message));
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let progressBar = null;
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function onProgress(bytesTotal, delta) {
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if (!progressBar) {
progressBar = new ProgressBar(`Downloading Chromium r${revision} - ${toMegabytes(bytesTotal)} [:bar] :percent :etas `, {
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complete: '=',
incomplete: ' ',
width: 20,
total: bytesTotal,
});
}
progressBar.tick(delta);
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}
function toMegabytes(bytes) {
let mb = bytes / 1024 / 1024;
return `${Math.round(mb * 10) / 10} Mb`;
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}