delay-map-batch

delay-map-batch

Enumerate array by batch, there will be a delay in milliseconds before processing the next batch.

Installation

Node

var DelayMapBatch = require('delay-map-batch');

Browser

<script type='text/javascript' src='delay-map-batch.min.js'></script>

Usage

DelayMapBatch([1,2,3,4,5], (n, index)=>{
	//Do some stuff
	console.log(n);
}, {
	batchSize: 1000,
}).then(()=>{
	//Mapping finished
});

With 2s delay between batches:

DelayMapBatch([1,2,3,4,5], (n, index)=>{
	//Do some stuff
	console.log(n);
}, {
	batchSize: 1000,
	delay: 2000,
}).then(()=>{
	//Mapping finished
});

API Documentation

DelayMapBatch(array, mapFunction, [params])

Parameters

• array: The array to be enumerated.
• mapFunction: The function called for each element of the array, accept 2 parameters, first is the element enumerated, second is the index of the element in the array.
• params: Parameters for enumerating array.

Returns

A Promise() object, you can use then() to add functions to be executed after enumeration finished, or add catch() to catch exceptions when there is anything thrown from the map function.

Tests

Run npm test to run the test cases.