L33T CLDR data for FormatJS, react-intl, etc...

Years ago, a friend taught me a simple trick you can use when working on internationalized projects to make sure you did not miss any strings in your translations:

• Translate the English resources into the L33T syntax
• Tr4nsL4t3 t3h 3ngL1sh r3s0urc3z 1nt0 t3h L33T synt4x

You can do this slowly, by pasting content into an online translater like this or you can use the following JavaScript:

// Credit: http:https://www.jsoneliners.com/string/convert-a-string-to-leet-l33t/
function(text) {
    return text.replace(/[a-z]/g, function fn (a) {
      return '4BCD3F6H1JKLMN0PQR57'[parseInt(a, 36) - 10] || a.replace(/[a-t]/gi, fn)
    })
}

This locale-data was manually converted for use with React and React-intl. The react-intl project uses formatjs-extract-cldr-data to generate the locale-data files. Because L33T is not an official language I don't think those projects should be polluted with support L33T so I chose to share the code here.

I hope this helps you with your React i18n projects.