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.
*/
// puppeteer-core should not install anything.
if (require('./package.json').name === 'puppeteer-core')
return;
buildNode6IfNecessary();
if (process.env.PUPPETEER_SKIP_CHROMIUM_DOWNLOAD) {
logPolitely('**INFO** Skipping Chromium download. "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" environment variable was found.');
return;
}
if (process.env.NPM_CONFIG_PUPPETEER_SKIP_CHROMIUM_DOWNLOAD || process.env.npm_config_puppeteer_skip_chromium_download) {
logPolitely('**INFO** Skipping Chromium download. "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" was set in npm config.');
return;
}
if (process.env.NPM_PACKAGE_CONFIG_PUPPETEER_SKIP_CHROMIUM_DOWNLOAD || process.env.npm_package_config_puppeteer_skip_chromium_download) {
logPolitely('**INFO** Skipping Chromium download. "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" was set in project config.');
return;
}
const downloadHost = process.env.PUPPETEER_DOWNLOAD_HOST || process.env.npm_config_puppeteer_download_host || process.env.npm_package_config_puppeteer_download_host;
const puppeteer = require('./index');
const browserFetcher = puppeteer.createBrowserFetcher({ host: downloadHost });
const revision = process.env.PUPPETEER_CHROMIUM_REVISION || process.env.npm_config_puppeteer_chromium_revision || process.env.npm_package_config_puppeteer_chromium_revision
|| require('./package.json').puppeteer.chromium_revision;
const revisionInfo = browserFetcher.revisionInfo(revision);
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// Do nothing if the revision is already downloaded.
if (revisionInfo.local) {
generateProtocolTypesIfNecessary(false /* updated */);
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return;
}
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// Override current environment proxy settings with npm configuration, if any.
const NPM_HTTPS_PROXY = process.env.npm_config_https_proxy || process.env.npm_config_proxy;
const NPM_HTTP_PROXY = process.env.npm_config_http_proxy || process.env.npm_config_proxy;
const NPM_NO_PROXY = process.env.npm_config_no_proxy;
if (NPM_HTTPS_PROXY)
process.env.HTTPS_PROXY = NPM_HTTPS_PROXY;
if (NPM_HTTP_PROXY)
process.env.HTTP_PROXY = NPM_HTTP_PROXY;
if (NPM_NO_PROXY)
process.env.NO_PROXY = NPM_NO_PROXY;
browserFetcher.download(revisionInfo.revision, onProgress)
.then(() => browserFetcher.localRevisions())
.then(onSuccess)
.catch(onError);
/**
* @param {!Array<string>}
* @return {!Promise}
*/
function onSuccess(localRevisions) {
logPolitely('Chromium downloaded to ' + revisionInfo.folderPath);
localRevisions = localRevisions.filter(revision => revision !== revisionInfo.revision);
// Remove previous chromium revisions.
const cleanupOldVersions = localRevisions.map(revision => browserFetcher.remove(revision));
return Promise.all([...cleanupOldVersions, generateProtocolTypesIfNecessary(true /* updated */)]);
}
/**
* @param {!Error} error
*/
function onError(error) {
console.error(`ERROR: Failed to download Chromium r${revision}! Set "PUPPETEER_SKIP_CHROMIUM_DOWNLOAD" env variable to skip download.`);
console.error(error);
process.exit(1);
}
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let progressBar = null;
let lastDownloadedBytes = 0;
function onProgress(downloadedBytes, totalBytes) {
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if (!progressBar) {
const ProgressBar = require('progress');
progressBar = new ProgressBar(`Downloading Chromium r${revision} - ${toMegabytes(totalBytes)} [:bar] :percent :etas `, {
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complete: '=',
incomplete: ' ',
width: 20,
total: totalBytes,
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});
}
const delta = downloadedBytes - lastDownloadedBytes;
lastDownloadedBytes = downloadedBytes;
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progressBar.tick(delta);
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}
function toMegabytes(bytes) {
const mb = bytes / 1024 / 1024;
return `${Math.round(mb * 10) / 10} Mb`;
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}
function buildNode6IfNecessary() {
const fs = require('fs');
const path = require('path');
// if this package is installed from NPM, then it already has up-to-date node6
// folder.
if (!fs.existsSync(path.join('utils', 'node6-transform')))
return;
// if async/await is supported, then node6 is not needed.
if (supportsAsyncAwait())
return;
// Re-build node6/ folder.
logPolitely('Building Puppeteer for Node 6');
require(path.join(__dirname, 'utils', 'node6-transform'));
}
function supportsAsyncAwait() {
try {
new Function('async function test(){await 1}');
} catch (error) {
return false;
}
return true;
}
function generateProtocolTypesIfNecessary(updated) {
if (!supportsAsyncAwait())
return;
const fs = require('fs');
const path = require('path');
if (!fs.existsSync(path.join(__dirname, 'utils', 'protocol-types-generator')))
return;
if (!updated && fs.existsSync(path.join(__dirname, 'lib', 'protocol.d.ts')))
return;
return require('./utils/protocol-types-generator');
}
function logPolitely(toBeLogged) {
const logLevel = process.env.npm_config_loglevel;
const logLevelDisplay = ['silent', 'error', 'warn'].indexOf(logLevel) > -1;
if (!logLevelDisplay)
console.log(toBeLogged);
}