@fesjs/fes/lib/utils/fork.js

一个好用的前端管理台快速开发框架

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = start;
var _nodeChild_process = require("node:child_process");
var _nodeProcess = _interopRequireDefault(require("node:process"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const usedPorts = [];
let CURRENT_PORT;
function start({
  scriptPath
}) {
  const execArgv = _nodeProcess.default.execArgv.slice(0);
  const inspectArgvIndex = execArgv.findIndex(argv => argv.includes('--inspect-brk'));
  if (inspectArgvIndex > -1) {
    const inspectArgv = execArgv[inspectArgvIndex];
    execArgv.splice(inspectArgvIndex, 1, inspectArgv.replace(/--inspect-brk=(.*)/, (match, s1) => {
      let port;
      try {
        port = Number.parseInt(s1, 10) + 1;
      } catch (e) {
        port = 9230; // node default inspect port plus 1.
      }
      if (usedPorts.includes(port)) {
        port += 1;
      }
      usedPorts.push(port);
      return `--inspect-brk=${port}`;
    }));
  }

  // set port to env when current port has value
  if (CURRENT_PORT) {
    _nodeProcess.default.env.PORT = CURRENT_PORT;
  }
  const child = (0, _nodeChild_process.fork)(scriptPath, _nodeProcess.default.argv.slice(2), {
    execArgv
  });
  child.on('message', data => {
    const type = data && data.type || null;
    if (type === 'RESTART') {
      child.kill();
      start({
        scriptPath
      });
    } else if (type === 'UPDATE_PORT') {
      // set current used port
      CURRENT_PORT = data.port;
    }
    _nodeProcess.default.send && _nodeProcess.default.send(data);
  });
  return child;
}