Syncer

Tool use to synchronize asynchronous callbacks together. This calls the main callback when the correct number of calls is reached.

Install

npm install --save callback_sync

Example

Here is a small example on how to use this module

const syncer = require("callback_sync");

var sync = syncer(4, function(err, val) {
	console.log("sync",err,val);
});

sync(null, 8);
sync(null, 6);
sync(new Error("erreur"), 10);
sync(null, 4);

#(targetCount, callback(err, data))

This is the only function of the module.

• targetCount is the number of calls to wait before calling back.
• callback is the function to callback once the number is reached or there is an error
  • err is the error object (null if no error)
  • data is an array of values given through every callback (empty on error)

For every call to the returned method, the data and error will be aggregated in an array.

Tips

This syncer can be used as a callback(err, data) to other asynchronous functions (it was build for this).

Credit

Copyright (c) 2018, Weaverize SAS. All rights reserved. Contact: [email protected].