repeatingbeats/invoke

JS flow control micro-library

invoke's Issues

Invoke for Javascript Clientside

Hi!

I was wondering..

Its possible to implement Invoke running in a browser? (without NodeJS, only javascript client)
It would be interesting!

Thanks

Add methods that operate on arrays of functions

invoke has nice syntax for controlling the flow of individual anonymous functions, but it lacks semantics for operating on arrays of functions.

I'm currently thinking of an API that looks like:

// batch of sequential functions
invoke(batch).sequentially().rescue(function (err) {
  // error handler
}).end(initial, function (results) {
 // success handler
});

// batch of parallel functions
invoke(batch).inParallel().rescue(function (err) {
  // error handler
}).end(initial, function (results) {
  // success handler
});

// complex flow
invoke(function (data, callback) {
  // ...
}).then(sequentialBatch).sequentially().then(function (data, callback) {
 // ...
}).then(parallelBatch).inParallel().rescue(function (err) {
  // error handler
}).end(initial, function (results) {
  // success handler
});

rescue called n times - not once

example:

var invoke = require('./../lib/invoke')
, start

// Parallel execution of three slow async functions
start = Date.now()

invoke(function (data, callback) {
setTimeout(function(){ callback('error 1') }, 100)
}).and(function (data, callback) {
setTimeout(function(){ callback('error 2') }, 100)
}).and(function (data, callback) {
setTimeout(function(){ callback('error 3') }, 100)
}).rescue(function (err) {
console.error(err)
}).end(null, function (data) {
console.log('Parallel execution took: ' + (Date.now() - start))
})

Result: resque called 3 times, not once
error 1
error 2
error 3

To fixed put this line to top (in invoke.js)
78: if (self._err) return
after 71: fn(passed, function (err, data) {