Appmanifest NPM

appmanifest

Validate web app manifest (http://w3c.github.io/manifest)

* Tries to follow the Spec as it is (as much as possible)

Try it online -

This project is still under active development. Ideas and contributions welcome :)

Install

npm install appmanifest

Usage

API

// result is the processed manifest object
var result = manifestParser({
  manifest: "<manifest json string>",
  manifestUrl: "https://example.com/manifest.json", // this is required to validate some urls
  documentUrl: "https://example.com/" // this is also required to validate some urls
  logger: function() { return { warn() {}, error(){}, log(){} } } // optional
});

If you don't want to pass manifestUrl and documentUrl, just use example.com urls as mentioned above.

Capture errors and warnings

You can pass your custom logger and capture all errors and warnings to compile and display later. The signature of the logger function is this.

function Logger (name /* name of the param currently validated */) {
  return {
    warn(message) {
      // do your stuff
    },
    error (message) {
      // do your stuff
    },
    log (message) {
      // do your stuff
    }
  }
}

Node

const parse = require('appmanifest').manifestParser;

Browser

You can bundle this with webpack / browserify
Generate your dist - npm run dist
Get it from CDN - https://npmcdn.com/appmanifest@latest/dist/manifest-parser.min.js

The library when obtained as a built bundle, exports UMD with ManifestParser as the name.

Note:

If you're using the cdn URL, you need to use ManifestParser.default({});

Features

Processing

Spec: http://w3c.github.io/manifest/#processing

This helps in identifying possible mistakes in your manifest.json file in the following fields.

start_url
display
orientation
name
lang
short_name
icons
splash_screens
scope
related_applications
prefer_related_applications
theme_color
background_color

* The unchecked ones are not yet implemented

Installability Signals

Spec: http://w3c.github.io/manifest/#installability-signals

This tool is to identify from a URL, warnings about some of your app installability signals - to make it more installable - Does it even mean anything? Yes. It's a thing now. Live with it.

link associativity with manifest & contains at least name and a suitable icon
Served over HTTPS
CSP

* The unchecked ones are not yet implemented

Note: There are a few others that cannot be checked with this tool. Feel free to visit the link mentioned above to help making your manifests better and give the browser possible installability signals.