add memory leak test (#2487)

package.json

@@ -150,6 +150,7 @@
  "eslint-plugin-react": "^7.34.1",
  "eslint-plugin-react-hooks": "^4.6.0",
  "eslint-plugin-vitest": "^0.4.1",
+ "jest-leak-detector": "^29.7.0",
  "jsdom": "^24.0.0",
  "json": "^11.0.0",
  "prettier": "^3.2.5",

tests/vanilla/memoryleaks.test.ts

@@ -0,0 +1,14 @@
+import LeakDetector from 'jest-leak-detector'
+import { expect, it } from 'vitest'
+import { atom, createStore } from 'jotai/vanilla'
+
+it('should not have memory leaks with an atom', async () => {
+ const store = createStore()
+ let detector: LeakDetector
+ ;(() => {
+ const objAtom = atom({})
+ detector = new LeakDetector(store.get(objAtom))
+ })()
+ const isLeaking = await detector.isLeaking()
+ expect(isLeaking).toBe(false)
+})

yarn.lock

@@ -3466,6 +3466,19 @@ iterator.prototype@^1.1.2:
  reflect.getprototypeof "^1.0.4"
  set-function-name "^2.0.1"
 
+jest-get-type@^29.6.3:
+ version "29.6.3"
+ resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-29.6.3.tgz#36f499fdcea197c1045a127319c0481723908fd1"
+ integrity sha512-zrteXnqYxfQh7l5FHyL38jL39di8H8rHoecLH3JNxH3BwOrBsNeabdap5e0I23lD4HHI8W5VFBZqG4Eaq5LNcw==
+
+jest-leak-detector@^29.7.0:
+ version "29.7.0"
+ resolved "https://registry.yarnpkg.com/jest-leak-detector/-/jest-leak-detector-29.7.0.tgz#5b7ec0dadfdfec0ca383dc9aa016d36b5ea4c728"
+ integrity sha512-kYA8IJcSYtST2BY9I+SMC32nDpBT3J2NvWJx8+JCuCdl/CR1I4EKUJROiP8XtCcxqgTTBGJNdbB1A8XRKbTetw==
+ dependencies:
+ jest-get-type "^29.6.3"
+ pretty-format "^29.7.0"
+
 "js-tokens@^3.0.0 || ^4.0.0", js-tokens@^4.0.0:
  version "4.0.0"
  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"