Function startDevWebBridge

scripts/dev-web.ts:63–133

()

}

async function startDevWebBridge() {
  await buildDevWebBridge()

  const child = spawn(electronPath, [bridgeBuildPath], {
    cwd: projectRoot,
    env: {
      ...process.env,
      HOWCODE_REPO_ROOT: devRepoRoot,
      HOWCODE_DEV_WEB_BRIDGE_HOST: DEV_SERVER_HOST,
      HOWCODE_DEV_WEB_BRIDGE_PORT: '0',
      HOWCODE_DEV_WEB_BRIDGE_TOKEN: bridgeToken,
      ELECTRON_RUN_AS_NODE: '1',
    },
    stdio: ['ignore', 'pipe', 'pipe'],
  })

  child.stderr?.on('data', (chunk) => {
    process.stderr.write(chunk)
  })

  return new Promise<{ child: ChildProcess; port: number }>((resolve, reject) => {
    let stdoutBuffer = ''
    let settled = false

    const fail = (error: Error) => {
      if (settled) {
        return
      }
      settled = true
      reject(error)
    }

    child.once('error', fail)
    child.once('exit', (code, signal) => {
      if (!settled) {
        fail(new Error(`dev:web bridge exited before startup (code=${code}, signal=${signal}).`))
        return
      }

      console.error(`dev:web bridge exited unexpectedly (code=${code}, signal=${signal}).`)
      void shutdown(1)
    })

    child.stdout?.on('data', (chunk) => {
      const text = chunk.toString()
      stdoutBuffer += text
      process.stdout.write(text)

      const lines = stdoutBuffer.split('\n')
      stdoutBuffer = lines.pop() ?? ''

      for (const line of lines) {
        if (!line.startsWith('HOWCODE_DEV_WEB_BRIDGE_READY ')) {
          continue
        }

        const payload = JSON.parse(line.slice('HOWCODE_DEV_WEB_BRIDGE_READY '.length)) as {
          port?: number