Ionic hooks: useref index.html file.

after_prepare\015_prepare_index_html.js

#!/usr/bin/env node

// useref index.html
// v1.0
// searches the node-useref tags in your index.html to replace it width
// the bundle.
// https://www.npmjs.com/package/node-useref

var fs = require('fs');
var path = require('path');
var useref = require('node-useref');

var rootDir = process.argv[2];
var platformPath = path.join(rootDir, 'platforms');
var platform = process.env.CORDOVA_PLATFORMS;
var cliCommand = process.env.CORDOVA_CMDLINE;

// hook configuration
var isRelease = (cliCommand.indexOf('--release') > -1) || (cliCommand.indexOf('--runrelease') > -1);
// isRelease = true;

if (!isRelease) {
    return;
}

switch (platform) {
    case 'android':
        platformPath = path.join(platformPath, platform, 'assets', 'www');
        break;
    case 'ios':
        platformPath = path.join(platformPath, platform, 'www');
        break;
    default:
        console.log('this hook only supports android and ios currently');
        return;
}

console.log('************************************************************************************');
console.log('... useref index.html ...');
console.log('************************************************************************************');

userefIndexHtml(path.join(platformPath, "index.html"));

function userefIndexHtml(file)
{
    var opts = {};

    try {
        var res = String(fs.readFileSync(file));
        var output = useref(res, opts);
        var html = output[0];

        console.log('html', html);

        fs.writeFileSync(file, html);

    } catch (err) {
        console.log('userefIndexHtml: Error', err);
    }
}