UNPKG

chrome-devtools-frontend

Version:
84 lines (70 loc) 2.66 kB
// Copyright 2021 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. const cssnano = require('cssnano'); const cssnanoPresetLite = require('cssnano-preset-lite'); const fs = require('fs'); const path = require('path'); const postcss = require('postcss'); const {writeIfChanged} = require('./ninja/write-if-changed.js'); async function runCSSMinification(input, fileName) { // postcss needs to be given a fileName, even though it doesn't read from it nor write to it. // So we pass in the correct name, even though it has no impact on the resulting code. const result = await postcss([ cssnano({preset: cssnanoPresetLite}), ]).process(input, {from: fileName}); return result.css; } async function codeForFile({fileName, input, isDebug, buildTimestamp}) { input = input.replace(/\`/g, '\\\''); input = input.replace(/\\/g, '\\\\'); const stylesheetContents = isDebug ? input : await runCSSMinification(input, fileName); const year = new Date(Number(buildTimestamp) * 1000).getUTCFullYear(); return `// Copyright ${year} The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // IMPORTANT: this file is auto generated. Please do not edit this file. /* istanbul ignore file */ export default \`${stylesheetContents} /*# sourceURL=\${import.meta.resolve('./${fileName}')} */\`;`; } // Exported only so it can be unit tested. exports.codeForFile = codeForFile; async function runMain() { const [, , buildTimestamp, isDebugString, targetName, srcDir, targetGenDir, files, ] = process.argv; const filenames = files.split(','); const configFiles = []; const isDebug = isDebugString === 'true'; for (const fileName of filenames) { const contents = fs.readFileSync(path.join(srcDir, fileName), { encoding: 'utf8', flag: 'r', }); const newContents = await codeForFile({ fileName, isDebug, input: contents, buildTimestamp, }); const generatedFileName = `${fileName}.js`; const generatedFileLocation = path.join(targetGenDir, generatedFileName); writeIfChanged(generatedFileLocation, newContents); configFiles.push(`\"${generatedFileName}\"`); } writeIfChanged( path.join(targetGenDir, `${targetName}-tsconfig.json`), `{ "compilerOptions": { "composite": true, "outDir": "." }, "files": [ ${configFiles.join(',\n ')} ] } `, ); } if (require.main === module) { runMain(); }