60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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/**
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* Copyright 2020 Google Inc. All rights reserved.
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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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const child_process = require('child_process');
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const path = require('path');
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const fs = require('fs');
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const {promisify} = require('util');
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const exec = promisify(child_process.exec);
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const fsAccess = promisify(fs.access);
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const fileExists = async filePath => fsAccess(filePath).then(() => true).catch(() => false);
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/*
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* Now Puppeteer is built with TypeScript, we need to ensure that
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* locally we have the generated output before trying to install.
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*
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* For users installing puppeteer this is fine, they will have the
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* generated lib/ directory as we ship it when we publish to npm.
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*
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* However, if you're cloning the repo to contribute, you won't have the
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* generated lib/ directory so this script checks if we need to run
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* TypeScript first to ensure the output exists and is in the right
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* place.
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*/
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async function compileTypeScript() {
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return exec('npm run tsc').catch(err => {
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console.error('Error running TypeScript', err);
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process.exit(1);
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});
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}
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async function compileTypeScriptIfRequired() {
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const libPath = path.join(__dirname, 'lib');
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const libExists = await fileExists(libPath);
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if (libExists) return;
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console.log('Puppeteer:', 'Compiling TypeScript...');
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await compileTypeScript();
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}
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// It's being run as node typescript-if-required.js, not require('..')
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if (require.main === module)
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compileTypeScriptIfRequired();
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module.exports = compileTypeScriptIfRequired;
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