@yonle/multitask/multitask.js

A simple multitask script that used for development like compile/building.

#!/usr/bin/env node
const multitask = require("./multitask.lib.js");
try {
  let reqpath = process.argv.slice(2)[0];
  if (reqpath && !reqpath.startsWith("/")) reqpath = process.cwd() + "/" + reqpath;
  
  let tasks = require(reqpath || process.cwd() + "/Tasks");
  let limit = Number(process.env.MULTITASK_LIMIT) || 4;
  let curTask = 0;

  function run() {
    curTask++;
    if (curTask > limit) return curTask--;
    if (!tasks.length) return process.exit(0);
    let task = tasks.shift();
    if (!task) return;

    multitask(task[0], task[1], task[2]).then((c) => {
      curTask--;
      run();
    });

    if (tasks.length !== 0) run();
  }

  if (tasks.length) {
    console.log(
      "Total Tasks: " + tasks.length + "\nEach-Task limit per run: " + limit
    );
  }

  run();
} catch (error) {
  if (error.code === "ENOTFOUND")
    return console.error("*** Multitask: No tasks file was found.", error);
  console.error(error);
}