Command line to generate a translations file compatible with Drupal.
It retrieves all translations strings from Gutenberg __(), _n(), _x() and _nx() translation function calls and generates equivalent Drupal.t() and Drupal.formatPlural() calls.
A new translations file drupal-gutenberg-translations.js will be created at the given target path.
Install it:
npm i drupal-gutenberg-translations --save-dev
or globally:
npm i -g drupal-gutenberg-translations
To generate drupal-gutenberg-translations.js file:
npx drupal-gutenberg-translations [target path]