// sub.js
// 建议这个包引用node_modules中的一些cpu密集型处理任务
const { Base } = require('sub-processor');
module.exports = class Sub extends Base {
  handler(arg1, arg2) {
    // do something and return with promise or return directly  
  }
};

const { Processor } = require('sub-processor');
const processor = new Processor({moduleFullPath: `fullPathToModule/sub.js`});

processor.on('error', (err) => {
  // do something
});

processor
  .exec(arg1, arg2)
  .then((result) => {
    // result of running sub.js 
  })
  .catch((err) => {
    // running errored
  })
  .then(() => processor.dispose());