yarn add calypso-extractor

Add following line as script

"calypso-extractor": "calypso-extractor -c calypso-extractor-config.js"

calypso-extractor-config.js

module.exports = {
  root: 'src',
  languages: {
    base: 'i18n/en.json',
    list: [
      'i18n/en.json',
      'i18n/tr.json',
      'i18n/fr.json',
    ]
  }
};

• root: The project root path.
• languages: This option must be set. Collected keys will be extracted as base option.

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