nl_tokens: Prepare the dependencies of the polyfill to support .
pl_tokens: function preparePolyfillSupport ( polyfill , rootDir , logger ) { if ( ! polyfill ) { return ; } if ( ! Array . isArray ( polyfill ) ) { polyfill = [ polyfill ] ; } polyfill . forEach ( info => { try { ensure ( info . desc , info . deps , rootDir ) ; } catch ( <mask> ) { logger . warn ( ex . toString ( ) ) ; } } ) ; }