jest-leak-detector

jest-leak-detector

Module for verifying whether an object has been garbage collected or not.

Internally creates a weak reference to the object, and forces garbage collection to happen. If the reference is gone, it meant no one else was pointing to the object.

Example

let reference = {};

const detector = new LeakDetector(reference);

// Reference is held in memory.
console.log(detector.isLeaked()); // true

// We destroy the only reference to the object.
reference = null;

// Reference is gone.
console.log(detector.isLeaked()); // false

Changelog

24.4.0

Features

• [jest-resolve] Now supports PnP environment without plugins (#8094)

Fixes

• [expect] Compare DOM nodes even if there are multiple Node classes (#8064)
• [jest-worker] worker.getStdout() can return null (#8083)
• [jest-worker] Re-attach stdout and stderr from new processes/threads created after retries (#8087)
• [jest-reporters/jest-runner] Serialize changedFiles passed to workers (#8090)

Chore & Maintenance

• [*] Make sure to include d.ts files in the tarball when building (#8086)