Run ES6 import syntax in Node child process

I officially give up. I'm trying to run a node es6 project that uses es6 import syntax, but the child processes won't work. The problem is that childprocess.fork uses node and not babel-node. I've gotten it to run using babel-node, but now they can't communicate via process.send. I'm looking for any options to solve the problem, maybe there is an easier one.

let appPath = path.dirname(require.main.filename);
let babelPath = path.join(appPath, 'node_modules/.bin/babel-node.cmd'); //WINDOWS

let filepath = path.join(__dirname, 'processes', moduleName);
let process = childProcess.fork(filepath, { execPath: babelPath });

process.on('message', msg => console.log(msg));

which gives me this:

Error: channel closed at ChildProcess.target.send (internal/child_process.js:523:16)