webpack-critical.js

//...
new HtmlCriticalPlugin({
    base: DIST_DIR,
    src: 'index.html',
    dest: 'index.html',
    inline: true,
    minify: true,
    extract: true,
    width: 1200,
    height: 1200,
    penthouse: {
        blockJSRequests: false,
    }
}),
//...