mwtsc/lib/wrap.js

tsc wrapper for midway development

// 拿到执行路径，以及执行文件
const childPath = process.env.CHILD_CMD_PATH;
const childCwd = process.env.CHILD_CWD;
const { join, isAbsolute } = require('path');
const { CHILD_PROCESS_EXCEPTION_EXIT_CODE } = require('./constants');
// eslint-disable-next-line node/no-unsupported-features/node-builtins
const inspector = require('inspector');
const { debuglog } = require('util');

function debug(msg) {
  debuglog('[mwtsc]: ' + msg);
};

const log = debuglog('midway:debug');

if (process.debugPort) {
  const debugUrl = inspector.url();
  // 防止拿失败
  if (/ws/.test(debugUrl)) {
    process.send({
      title: 'debug-url',
      debugUrl,
    });
  }
}

// get the child process execArgs
const runArgs = process.argv.slice(2);
if (runArgs.includes('--keepalive')) {
  process.once('unhandledRejection', err => {
    console.error(err);
    process.exit(CHILD_PROCESS_EXCEPTION_EXIT_CODE);
  });

  process.once('uncaughtException', err => {
    console.error(err);
    process.exit(CHILD_PROCESS_EXCEPTION_EXIT_CODE);
  });
}

process.on('message', data => {
  if (data.title === 'server-kill') {
    debug('send SIGINT to child process');
    process.emit('SIGINT');
  }
});

process.chdir(childCwd);
if (isAbsolute(childPath)) {
  require(childPath);
} else {
  require(join(childCwd, childPath));
}