index.js
function queue(runner) {
    if (running < tasks) {
      ++running;
      runner(release);
    } else {
      pending.push(runner);
    }
  }
function queue(runner) {
    if (running < tasks) {
      ++running;
      runner(release);
    } else {
      pending.push(runner);
    }
  }
function queue ( runner ) { if ( running < tasks ) { ++ running ; runner ( release ) ; } else { pending . push ( runner ) ; } }
Queue an upcoming task, or run it immediately.
Queue an upcoming task or run it immediately .