build.js

#!/usr/bin/env node
const path = require('path');
const child_process = require('child_process');

main();

async function main() {
  await yarnRun(
    'pbjs',
    '-t',
    'static-module',
    '-w',
    'commonjs',
    '-o',
    'proto/index.js',
    'proto/index.proto'
  );
  await yarnRun('pbts', '-o', 'proto/index.d.ts', 'proto/index.js');
  await yarnRun('tsc');
}

function yarnRun(...args) {
  const child = child_process.spawn('yarn', ['run', ...args], {
    cwd: path.resolve(__dirname, '..'),
    stdio: 'inherit',
  });
  return new Promise((resolve, reject) => {
    child.on('exit', resolve);
    child.on('error', reject);
  });
}