nl_tokens: Extends the target by the most inner props of sources
pl_tokens: function deepExtend ( target ) { const sources = Array . prototype . slice . call ( arguments , 1 ) ; sources . forEach ( function ( source ) { for ( const prop in source ) { if ( ! source . hasOwnProperty ( prop ) ) { continue ; } const targetProp = target [ prop ] ; const targetType = ( typeof targetProp ) ; //target prop is // a native single type // or not existent // or is not an anonymous object (not class instance) if ( ! targetProp || targetType === 'number' || targetType === 'string' || util . isArray ( targetProp ) || util . isDate ( targetProp ) || targetProp . constructor . name !== 'Object' ) { target [ prop ] = source [ prop ] ; } else { //inner extend target [ prop ] = deepExtend ( { } , targetProp , source [ prop ] ) ; } } } ) ; return <mask> ; }