node.js - Node Async Waterfall with generic callback handler -


i have inherited application relies entirely on async.waterfall 1 of controllers. don't want re-write whole thing, in fixing couple items want convert callback param more generic handler.

right example function looks below (same pattern exists dozen more functions)

function create(data, callbackparent) {   async.waterfall(     [       function(callback) {         if (!interface) {           return init(callback);         } else {           return callback(null);         }       },       function(callback) {         return interface.create(data, callback);       }     ],     (error, result) => {       if (error) {         const codeindex = error.indexof('statuscode=') + 'statuscode='.length;         const errorstatuscode = error.slice(codeindex, codeindex + 3);         if(errorstatuscode == 401) {           reconnect(callbackparent);         }         else {           return callbackparent(error);         }       }       return callbackparent(null, result);     }   ); }

no problem , works great; however, notice callback there. trying move generic function handleresponse(error, result) example:

function create(data, callbackparent) {   async.waterfall(     [       function(callback) {         if (!interface) {           return init(callback);         } else {           return callback(null);         }       },       function(callback) {         return interface.create(data, callback);       }     ],     (error, result) => handleresponse   ); }

i've tried various combos of syntax above either blows up, or lose context callbackparent.

  1. how can construct callback async.waterfall array separate , generic handler?


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