This is a tool to generate locales for FormatJS like ones from locale-data folder from the polyfills.

You may need a locale that is absent or inaccurate there but it can be onerous to write them by hand. So this uses some source files to generate locales as the original ones are created but in a more appropriate format.

⚠️ The currently supported Intl APIs are:

• Intl.ListFormat
• Intl.PluralRules
• Intl.RelativeTimeFormat

Usage: formatjs-localegen [options] <files...>

Create locales for FormatJS

Options:
  -m <module>    Module to create locale for. If specified, there should be
                 only one input file
  -d <dir>       Output directory (default: "locale-data")
  -l <locale>    Locale code

The source files are YAML files like these ones (Esperanto). The Intl module gets inferred by the file name (see the example folder mentioned before). You can define it yourself by -m option and in this case you can provide only one file.

The project uses Yarn.

git clone https://github.com/kotwys/formatjs-locale-generator
cd formatjs-locale-generator
yarn

The executable will be named dist/index.js.