gistfile1.js

// Method one, return statement after callback.
// Most clear, but extra line of code.
function asyncBiznis (callback) {
  moreAsyncBiznis(function (err, result) {
    if (err) {
      callback( new Error("Hope is lost.") );
      return;
    }
    
    // More logic... 
  });
});

// Method two, return on callback.
// Less clear, but saves a line of code.
function asyncBiznis (callback) {
  moreAsyncBiznis(function (err, result) {
    if (err) {
      return callback( new Error("Hope is lost.") );
    }
    
    // More logic... 
  });
});

// Method three, wrap all other logic in else{}
// Also clear, but results in extra indentation.
function asyncBiznis (callback) {
  moreAsyncBiznis(function (err, result) {
    if (err) {
      callback( new Error("Hope is lost.") );
    }
    else {
      // More logic... 
    }
  });
});