convert-locale-files.js

const fs = require('fs');

const ORIGINAL_LOCALE_FOLDER = './src/locale';
const NEW_DATA_FOLDER = './src/data';

// our new data folder
if (!fs.existsSync(NEW_DATA_FOLDER)){
    fs.mkdirSync(NEW_DATA_FOLDER);
}

const getLocaleFiles = () => {
    const map = {};
    fs.readdirSync(ORIGINAL_LOCALE_FOLDER).forEach((filename) => {
        const [locale, ] = filename.split('.');
        const content = fs.readFileSync(`${ORIGINAL_LOCALE_FOLDER}/${filename}`, 'utf8');
        map[locale] = content.trim();
    });
    return map;
};

const getEs6ModuleContent = (localeFiles) => {
    const newFileMap = {};
    Object.keys(localeFiles).forEach((locale) => {
        let content = localeFiles[locale].replace(/import moment from '..\/moment';\n\n?/, '');
        content = content.replace(/export default moment\.defineLocale\('[a-zA-Z\-']+', \{/, 'export default {');
        content = content.replace(/\}\)\;$/, '};\n');
        newFileMap[locale] = content;
    });
    return newFileMap;
};

const createNewLocaleModules = (localeFiles) => {
    const content = getEs6ModuleContent(localeFiles);
    Object.keys(content).forEach((locale) => {
        fs.writeFileSync(`${NEW_DATA_FOLDER}/${locale}.js`, content[locale]);
    });
};


const getNewContent = (locale) => `import moment from '../moment';
import data from '../data/${locale}';

export default moment.defineLocale('${locale}', data);
`;

const updateOldLocaleFiles = (localeFiles) => {
    Object.keys(localeFiles).forEach((locale) => {
        const content = getNewContent(locale);
        fs.unlinkSync(`${ORIGINAL_LOCALE_FOLDER}/${locale}.js`);
        fs.writeFileSync(`${ORIGINAL_LOCALE_FOLDER}/${locale}.js`, content);
    });
};


const localeFiles = getLocaleFiles();
createNewLocaleModules(localeFiles);
updateOldLocaleFiles(localeFiles);

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