nl_tokens: Deep extend destination object with N more objects
pl_tokens: function extend ( ) { var target = arguments . length > 0 && arguments [ 0 ] !== undefined ? arguments [ 0 ] : { } ; for ( var _len = arguments . length , sources = <mask> Array ( _len > 1 ? _len - 1 : 0 ) , _key = 1 ; _key < _len ; _key ++ ) { sources [ _key - 1 ] = arguments [ _key ] ; } if ( ! sources . length ) { return target ; } var source = sources . shift ( ) ; if ( ! is$1 . object ( source ) ) { return target ; } Object . keys ( source ) . forEach ( function ( key ) { if ( is$1 . object ( source [ key ] ) ) { if ( ! Object . keys ( target ) . includes ( key ) ) { Object . assign ( target , _defineProperty ( { } , key , { } ) ) ; } extend ( target [ key ] , source [ key ] ) ; } else { Object . assign ( target , _defineProperty ( { } , key , source [ key ] ) ) ; } } ) ; return extend . apply ( void 0 , [ target ] . concat ( sources ) ) ; }