/* eslint-disable no-restricted-syntax */ require('shelljs/global'); const fs = require('fs'); const nodeGlob = require('glob'); const { transform } = require('@babel/core'); const get = require('lodash/get'); const animateProgress = require('./helpers/progress'); const addCheckmark = require('./helpers/checkmark'); const { appLocales, DEFAULT_LOCALE } = require('../../src/i18n'); const babel = require('../../babel.config.js'); const { presets } = babel; let plugins = babel.plugins || []; plugins.push('react-intl'); // NOTE: styled-components plugin is filtered out as it creates errors when used with transform plugins = plugins.filter(p => p !== 'styled-components'); // Glob to match all js files except test files const FILES_TO_PARSE = 'src/**/!(*.test).js'; const newLine = () => process.stdout.write('\n'); // Progress Logger let progress; const task = message => { progress = animateProgress(message); process.stdout.write(message); return error => { if (error) { process.stderr.write(error); } clearTimeout(progress); return addCheckmark(() => newLine()); }; }; // Wrap async functions below into a promise const glob = pattern => new Promise((resolve, reject) => { nodeGlob( pattern, (error, value) => (error ? reject(error) : resolve(value)), ); }); const readFile = fileName => new Promise((resolve, reject) => { fs.readFile( fileName, 'utf8', (error, value) => (error ? reject(error) : resolve(value)), ); }); // Store existing translations into memory const oldLocaleMappings = []; const localeMappings = []; // Loop to run once per locale for (const locale of appLocales) { oldLocaleMappings[locale] = {}; localeMappings[locale] = {}; // File to store translation messages into const translationFileName = `src/translations/${locale}.json`; try { // Parse the old translation message JSON files const messages = JSON.parse(fs.readFileSync(translationFileName)); const messageKeys = Object.keys(messages); for (const messageKey of messageKeys) { oldLocaleMappings[locale][messageKey] = messages[messageKey]; } } catch (error) { if (error.code !== 'ENOENT') { process.stderr.write( `There was an error loading this translation file: ${translationFileName} \n${error}`, ); } } } const extractFromFile = async filename => { try { const code = await readFile(filename); const output = await transform(code, { filename, presets, plugins }); const messages = get(output, 'metadata.react-intl.messages', []); for (const message of messages) { for (const locale of appLocales) { const oldLocaleMapping = oldLocaleMappings[locale][message.id]; // Merge old translations into the babel extracted instances where react-intl is used const newMsg = locale === DEFAULT_LOCALE ? message.defaultMessage : ''; localeMappings[locale][message.id] = oldLocaleMapping || newMsg; } } } catch (error) { process.stderr.write(`\nError transforming file: ${filename}\n${error}\n`); } }; const memoryTask = glob(FILES_TO_PARSE); const memoryTaskDone = task('Storing language files in memory'); memoryTask.then(files => { memoryTaskDone(); const extractTask = Promise.all( files.map(fileName => extractFromFile(fileName)), ); const extractTaskDone = task('Run extraction on all files'); // Run extraction on all files that match the glob on line 16 extractTask.then(() => { extractTaskDone(); // Make the directory if it doesn't exist, especially for first run mkdir('-p', '<source src="" type=""/>/translations'); // eslint-disable-line let localeTaskDone; let translationFileName; for (const locale of appLocales) { translationFileName = `src/translations/${locale}.json`; localeTaskDone = task( `Writing translation messages for ${locale} to: ${translationFileName}`, ); // Sort the translation JSON file so that git diffing is easier // Otherwise the translation messages will jump around every time we extract const messages = {}; Object.keys(localeMappings[locale]) .sort() .forEach(key => { messages[key] = localeMappings[locale][key]; }); // Write to file the JSON representation of the translation messages const prettified = `${JSON.stringify(messages, null, 2)}\n`; try { fs.writeFileSync(translationFileName, prettified); localeTaskDone(); } catch (error) { localeTaskDone( `There was an error saving this translation file: ${translationFileName} \n${error}`, ); } } process.exit(); }); });