scratch_4.js

var browserSync = require('browser-sync').create();

browserSync({
    proxy: 'https://www.wikipedia.org/',
    files: ['assets/**'],
    serveStatic: ['assets'],
    rewriteRules: [
        {
            match: 'portal/wikipedia.org/assets/js/index-6adef12f4f.js',
            replace: '/js/index.js'
        }
    ]
});