nl_tokens: This will traverse an l10n - JSON file and call the callback function for each translation item .
pl_tokens: function traverseJson ( json , callback ) { let { translations } = json ; Object . keys ( translations ) . forEach ( ( namespace ) => { Object . <mask> ( translations [ namespace ] ) . forEach ( ( k ) => { callback ( translations [ namespace ] [ k ] , translations [ namespace ] , k ) ; } ) ; } ) ; }