Function makeHook

test/parallel/test-eventemitter-asyncresource.js:16–52

(trackedTypes)

} = require('timers/promises');

function makeHook(trackedTypes) {
  const eventMap = new Map();

  function log(asyncId, name) {
    const entry = eventMap.get(asyncId);
    if (entry !== undefined) entry.push({ name });
  }

  const hook = createHook({
    init(asyncId, type, triggerAsyncId, resource) {
      if (trackedTypes.includes(type)) {
        eventMap.set(asyncId, [
          {
            name: 'init',
            type,
            triggerAsyncId,
            resource,
          },
        ]);
      }
    },

    before(asyncId) { log(asyncId, 'before'); },
    after(asyncId) { log(asyncId, 'after'); },
    destroy(asyncId) { log(asyncId, 'destroy'); },
  }).enable();

  return {
    done() {
      hook.disable();
      return new Set(eventMap.values());
    },
    ids() {
      return new Set(eventMap.keys());
    },
  };
}

// Tracks emit() calls correctly using async_hooks
(async () => {