module.exports = {
    module: {
        loaders: [
            {
                test: /\.proto$/,
                loader: "pbf-loader"
            }
        ]
    }
}

const Pbf = require('pbf'); 
const compile = require('pbf/compile');
const fs = require('fs');
const schema = require('protocol-buffers-schema');

const data = 'somestring';
const proto = schema.parse(fs.readFileSync('./test.proto'));
const test = compile(proto).test; // assuming message definition: message test {}

const proto = require('./index.proto');
const Pbf = require('pbf');

const data = "somestring"; // data that you want to write;

const schema = proto.test; // accessing the message definition
const pbf = new Pbf();

// now you can write data to your pbf with pbf.writeMessage etc.
pbf.writeString(data);
const buffer = pbf.finish();
// now you can read back your message using schema.read(new Pbf(buffer))