chrome-devtools-frontend
Version:
Chrome DevTools UI
84 lines (70 loc) • 2.66 kB
JavaScript
// 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();
}