Peprze NPM | npm.io

Peprze

Promise shim and functionality extender

What is it?

This library allows to use promises in older browsers as well as add extra functionality to promises that allows promise functionality in the kaleo library set

Installation

This libray can be installed using:

NPM : npm install peprze --save
Bower : bower install peprze --save
Yarn : yarn add peprze

Getting started

The script can be loaded both in the head and in the body. All functionality is automatically loaded as soon as the file is loaded. Note: include this script before any other scripts for proper implementation

 <script src="/(node_modules|bower_modules)/peprze/peprze.min.js"></script>

To start using it is as simple as instancing a new promise in the same way as native promises

 var test = new Promise(function(resolve, reject){
  /* Do async here */
 })

Examples

Fetching files

Using Xhr to fetch files using promises

function fetchfile(url) {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', url, true);
  
  return new Promise(function(resolve, reject){
    xhr.onreadystatechange = function() {
      if(xhr.readyState === 4) {
        if(xhr.status === 200) {
          resolve(xhr.responseText);
        }
        else {
          reject(new Error(xhr.status));
        }
      }
    }
    
    xhr.send();
  });
}