nl_tokens: String tag ( for ES6 string templates ) for truncate starting whitespaces and eol - s
pl_tokens: function ws ( strings , expr ) { expr = [ ] ; for ( let i = 1 ; i < arguments . length ; i ++ ) { expr . <mask> ( arguments [ i ] ) ; } let res = '' ; for ( let i = 0 ; i < strings . length ; i ++ ) { res += strings [ i ] . replace ( wsRgxp , ' ' ) + ( i in expr ? expr [ i ] : '' ) ; } return res ; }