nl_tokens: Provide simple Class extension mechanism
pl_tokens: function ( sub ) { var Super = this ; var Constructor = hasOwn . call ( sub , 'constructor' ) ? sub . constructor : function ( ) { Super . apply ( this , arguments ) ; } ; // This initialization logic is somewhat sensitive to be compatible with // divergent JS implementations like the one found in Qt. See here for more // context: // // https://github.com/stripe/stripe-node/pull/334 Object . assign ( Constructor , Super ) ; Constructor . prototype = Object . create ( Super . prototype ) ; <mask> . assign ( Constructor . prototype , sub ) ; return Constructor ; }