website/generators/language/index.js

const fs = require('node:fs')

const prettier = require('prettier')

/**
 * @param {import('plop').NodePlopAPI} plop
 * @returns {import('node-plop').PlopGeneratorConfig}
 */
exports.languageGenerator = (plop) => {
  return {
    description: 'Add a new language for translations',
    prompts: [
      {
        type: 'input',
        name: 'locale',
        message: 'locale'
      }
    ],
    actions: [
      {
        type: 'addMany',
        base: 'locales/en',
        destination: 'locales/{{locale}}',
        templateFiles: 'locales/en/**'
      },
      async (answers) => {
        process.chdir(plop.getPlopfilePath())
        const data = JSON.parse(
          await fs.promises.readFile('i18n.json', { encoding: 'utf-8' })
        )
        data.locales.push(answers.locale)
        const formatted = prettier.format(JSON.stringify(data, null, 2), {
          filepath: 'i18n.json'
        })
        await fs.promises.writeFile('i18n.json', formatted, {
          encoding: 'utf-8'
        })
        return plop.renderString(
          `
            Added '{{locale}}' to the 'locales' array inside 'i18n.json'
            Don't forget to add the flag at 'public/images/svg/languages/{{locale}}.svg'
          `,
          answers
        )
      }
    ]
  }
}