VS Code Language Protocol Proxy

proxy.js

'use strict';

var vscode = require('vscode-languageserver');

const target = process.argv[2];  // the actual language server protocol implementation
const spawn = require('child_process').spawn;
const p = spawn(target, []);

const writer = new vscode.StreamMessageWriter(p.stdin);

process.on('message', (m) => { writer.write(m); });

const reader = new vscode.StreamMessageReader(p.stdout);
reader.listen((m) => { process.send(m); });

p.on('close', (code) => {
  process.exit(code);
});