tofu9989/nexttick

nextTick

Common functions using process.nextTick()

Installation

npm install nexttick

Usage

var nextTick = require('nexttick');

nextTick(function () {
  console.log('Hello, world');
});

API

nextTick( fn [, arg1, arg2, ...] )

nextTick(function () { console.log('hello'); });

nextTick(function (a, b) {
  console.log(a, b); // foo bar
}, 'foo', 'bar');

nextTick.loop( fn(exit) [, times] )

// specified loop length
var i = 0;
nextTick.loop(function () {
  console.log(++i);
}, 50);

// with exit
var i = 0;
nextTick.loop(function (exit) {
  console.log(++i);
  if (i > 100) exit();
});

nextTick.while( truth, fn (exit) )

var i = 0;
nextTick.while(function () { // this function is evaluated on each iteration
  return i < 100;
}, function () {
  console.log(++i);
});

nextTick.forEach( array, fn (value, index, array, exit) )

nextTick.forEach([ 1, 2, 3 ], function (value, index, array, exit) {
  console.log(index, value);
});

nextTick.slice( array [, begin [, end]] ).then( fn (sliced) )

nextTick.slice([ 1, 2, 3, 4, 5 ], 2, -1).then(function (sliced) {
  console.log(sliced); // [ 3, 4 ]
});

nextTick.in( hash, fn (value, key, hash, exit) )

nextTick.in({ foo: 'bar', baz: 'zoo' }, function (value, key, hash, exit) {
  console.log(key, value);
});

All loop methods accept a callback using a chained .then(cb) method. You may also pass any arguments you want to it using the exit([arg1, arg2, ...]) function.

nextTick.forEach([ 1, 2, 3 ], function (value) {
  console.log(value);
}).then(function () { // this will be called when the above finishes
  console.log('All done');
});

Error handling

Simply pass an Error to the exit() function:

nextTick.forEach([ 1, 2, 3 ], function (value, index, array, exit) {
  exit(new Error('Some error'));
}).then(function (err) {
  if (err) throw err;
});