Controls serial execution of promises
npm i loop-controller
import { LoopController } from "loop-controller";
//create a loop controller, that runs five iterations.
//It starts execution automatically.
const lc = new LoopController({
initialArray: [1, 2, 3, 4, 5],
makePromise: (index) => {
console.log("iteration: " + index);
return Promise.resolve();
},
});
// at any point call
lc.pause();
lc.resume();
lc.setArray();
lc.prependArray();The underlying waiter is exposed, to it's possible to 'hook' into the loop controller's transitions.
//await first iteration finishes, and pause it.
lc.waiter.await("iteration-done").then(() => {
//LoopController will receive a pause command in a certain state.
lc.pause();
});This way we can 'inject' actions when LoopController makes state transitions
or emit events. It's a powerful way to do white-box testing.
MIT