async-series's Introduction

async-series

Run a series of callbacks in sequence, as simply as possible.

More or less equivalent to async.series - solely for the sake of keeping some modules tiny for browserify.

Installation

npm install async-series

Usage

series(tasks, callback, safe)

Where tasks is an array of functions, each with their own done argument. callback is called when finished. Setting safe to true will ensure there's at least a tick between each task to prevent RangeErrors.

series([
  function(done) {
    console.log('first thing')
    done()
  },
  function(done) {
    console.log('second thing')
    done(new Error('another thing'))
  },
  function(done) {
    // never happens, because "second thing"
    // passed an error to the done() callback
  }
], function(err) {
  console.log(err.message) // "another thing"
})

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async-series's Issues

Bump to v1 to conform to semver

If you're not already familiar with semantic versioning check out http://semver.org/

Since this library is past initial development and has a stable public API, the version should be bumped to 1.0.0

Thanks for this module!

Usage from class instance

I am trying to pass the results of async-series to a promise for later use

class MyClass {
    constructor(preFolder, postFolder, debug) {
        this.result;
    }

    run() {
        series([
            function(done) {
                console.log('first thing')
                done()
            },
            function(done) {
                console.log('second thing')
                done(new Error('another thing'))
            }
        ], function(err, result) {

            if (err) {
                return Promise.reject(err);
            }
            return Promise.resolve(result);
        })
    }
}

I hope to then use the class this way

var testClass = new MyClass();
testClass.run().then(function(){
  // results from the "series" function
})

But I cant seem to get the promise to be handed over to the class instance method run(). Does anyone have an idea what I am doing wrong? thnaks

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