Zephr Browser

A JavaScript library to handle Zephr decisions in the browser.

Usage

UMD Module

<script src="https://assets.zephr.com/zephr-browser/<VERSION>/zephr-browser.umd.js">
<script>
  zephrBrowser.run();
</script>

ES Module

import * as zephrBrowser from 'https://assets.zephr.com/zephr-browser/<VERSION>/zephr-browser.esm.js';
zephrBrowser.run();

Run method optional arguments

The run method allows for an optional arguments object containing the following:

• cdnApi [String] - Zephr CDN API base url
• jwt [String] - JWT token for authentication
• customData [Object] - Additional string key/values to be used in decisions
• debug [Boolean] - Enables debug logging
• fetcher [Function] - The fetch function to be used for making requests. If not provided, the default fetch is used.
• automaticPolyfills [Boolean] - Enables automatic polyfills for unsupported browser APIs, currently for Intl.Segmenter. Defaults to true.

Debugging

To enable debug logging when calling zephrBrowser.run() add the optional argument to options within run():

import * as zephrBrowser from '@zephr/browser';
zephrBrowser.run({
  customData: {
	  counter: 40,
	  anything: true,
	  ref: document.referrer
  },
  jwt: "...",
  debug: true,
  fetcher: (url, options) => {
    return fetch(url, options);
  }
});

If you're unable to manually call zephrBrowser.run(), you can instead set a localstorage item zephrBrowserDebug to true to enable debug logging:

• Press f12 in the browser
• Click on the Application tab
• Click on Local Storage
• Click on the domain of the site you're on
• Add a new item with the key zephrBrowserDebug and the value true

Browser events triggered by Zephr

• zephr.browserDecisionsFinished - is triggered at the end of the call to run()

Building and running on localhost

First install dependencies:

npm install

To develop locally make sure you are forwarding http://localhost:3003 through a local Zephr Site and run:

npm start

To create a build:

npm run build