const glob = require('glob'); const prettier = require('prettier'); const fs = require('fs'); const { getStagedFiles } = require('./frontend_script_utils'); const matchExtensions = ['js', 'vue']; // This will improve glob performance by excluding certain directories. // The .prettierignore file will also be respected, but after the glob has executed. const globIgnore = ['**/node_modules/**', 'vendor/**', 'public/**']; const readFileAsync = (file, options) => new Promise((resolve, reject) => { fs.readFile(file, options, function(err, data) { if (err) reject(err); else resolve(data); }); }); const writeFileAsync = (file, data, options) => new Promise((resolve, reject) => { fs.writeFile(file, data, options, function(err) { if (err) reject(err); else resolve(); }); }); const mode = process.argv[2] || 'check'; const shouldSave = mode === 'save' || mode === 'save-all'; const allFiles = mode === 'check-all' || mode === 'save-all'; let globDir = process.argv[3] || ''; if (globDir && globDir.charAt(globDir.length - 1) !== '/') globDir += '/'; console.log( `Loading all ${allFiles ? '' : 'staged '}files ${globDir ? `within ${globDir} ` : ''}...`, ); const globPatterns = matchExtensions.map(ext => `${globDir}**/*.${ext}`); const matchedFiles = allFiles ? glob.sync(`{${globPatterns.join(',')}}`, { ignore: globIgnore }) : getStagedFiles(globPatterns); const matchedCount = matchedFiles.length; if (!matchedCount) { console.log('No files found to process with prettier'); process.exit(0); } let didWarn = false; let passedCount = 0; let failedCount = 0; let ignoredCount = 0; console.log(`${shouldSave ? 'Updating' : 'Checking'} ${matchedCount} file(s)`); const fixCommand = `yarn prettier-${allFiles ? 'all' : 'staged'}-save`; const warningMessage = ` =============================== GitLab uses Prettier to format all JavaScript code. Please format each file listed below or run "${fixCommand}" =============================== `; const checkFileWithOptions = (filePath, options) => readFileAsync(filePath, 'utf8').then(input => { if (shouldSave) { const output = prettier.format(input, options); if (input === output) { passedCount += 1; } else { return writeFileAsync(filePath, output, 'utf8').then(() => { console.log(`Prettified : ${filePath}`); failedCount += 1; }); } } else { if (prettier.check(input, options)) { passedCount += 1; } else { if (!didWarn) { console.log(warningMessage); didWarn = true; } console.log(`Prettify Manually : ${filePath}`); failedCount += 1; } } }); const checkFileWithPrettierConfig = filePath => prettier .getFileInfo(filePath, { ignorePath: '.prettierignore' }) .then(({ ignored, inferredParser }) => { if (ignored || !inferredParser) { ignoredCount += 1; return; } return prettier.resolveConfig(filePath).then(fileOptions => { const options = { ...fileOptions, parser: inferredParser }; return checkFileWithOptions(filePath, options); }); }); Promise.all(matchedFiles.map(checkFileWithPrettierConfig)) .then(() => { const failAction = shouldSave ? 'fixed' : 'failed'; console.log( `\nSummary:\n ${matchedCount} files processed (${passedCount} passed, ${failedCount} ${failAction}, ${ignoredCount} ignored)\n`, ); if (didWarn) process.exit(1); }) .catch(e => { console.log(`\nAn error occurred while processing files with prettier: ${e.message}\n`); process.exit(1); });