Use expo-crypto for UUID on Expo, expose useGzipCompression option and fix JavaScript mode People flushing issue

[jaredmixpanel]

No description provided.

[Copilot]

Pull Request Overview

This PR centralizes UUID generation with expo-crypto, ensures proper default imports for AsyncStorage, synchronizes user identity fields in queues, and introduces a gzip compression flag across JS, iOS, and Android modules.

• Added expo-crypto to reliably generate randomUUID() and fall back to uuid.v4().
• Implemented identifyUserQueue in the queue manager and wired it through core, main, and persistent layers.
• Exposed a useGzipCompression option in the JS API and native modules, and bumped native dependency versions.

Reviewed Changes

Copilot reviewed 20 out of 21 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
package.json	Added expo-crypto dependency for UUID generation fallback.
javascript/mixpanel-storage.js	Detect default exports from AsyncStorage require.
javascript/mixpanel-queue.js	Imported MixpanelType, added identifyUserQueue, and guard.
javascript/mixpanel-persistent.js	Use randomUUID() fallback, pass token to getInstance, add isIdentified.
javascript/mixpanel-main.js	Pass token to persistent, invoke identifyUserQueue, update return values.
javascript/mixpanel-core.js	Exposed identifyUserQueue method.
ios/MixpanelReactNative.swift	Added useGzipCompression parameter with default.
index.js	Updated init signature and JSDoc for useGzipCompression.
android/src/.../MixpanelReactNativeModule.java	Extended initialize signature with gzip flag.
android/build.gradle	Bumped mixpanel-android to 8.1.0.
tests/queue.test.js	Mocked new persistent methods and added USER-type queue tests.
tests/main.test.js	Added identifyUserQueue mock and new identify tests.
tests/jest_setup.js	Mocked expo-crypto’s randomUUID().
tests/index.test.js	Updated tests for gzip flag and formatting.
Samples/MixpanelExpo/package.json	Reordered and added metro runtime dependency.
Samples/MixpanelExpo/App.js	Changed placeholder token to a real token (to be reviewed).
MixpanelReactNative.podspec	Bumped Mixpanel-swift to 5.0.0.

Files not reviewed (1)

• Samples/MixpanelExpo/package-lock.json: Language not supported

Comments suppressed due to low confidence (2)

tests/main.test.js:371

• The test references MixpanelType but this constant is not imported in this file. Add import { MixpanelType } from './mixpanel-constants'; (or correct path) at the top.

expect(mixpanelMain.core.addToMixpanelQueue).toHaveBeenCalledWith(token, MixpanelType.EVENTS, expect.any(Object));

Samples/MixpanelExpo/App.js:17

• [nitpick] Sample app is hardcoding a real Mixpanel token. Consider reverting to a placeholder (e.g., YOUR_MIXPANEL_TOKEN) or using an environment variable.

    "26d77caa3b67accd112d74ecfc0214a4",

[Copilot]

Pull Request Overview

This PR integrates Expo’s crypto API for UUID generation, exposes a new useGzipCompression option across JS and native layers, and ensures user identity fields are correctly applied before flushing the USER queue.

• Use expo-crypto.randomUUID() with fallback to uuid.v4() for device IDs.
• Add a useGzipCompression parameter to the JS init API and native iOS/Android modules.
• Introduce identifyUserQueue to update USER‐type queue items with up-to-date identity fields.

Reviewed Changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Added expo-crypto dependency.
javascript/mixpanel-storage.js	Handle .default export for AsyncStorage module.
javascript/mixpanel-queue.js	Import MixpanelType; update getQueue logic; add identifyUserQueue.
javascript/mixpanel-persistent.js	Use expo-crypto.randomUUID with fallback; add isIdentified; update getInstance.
javascript/mixpanel-main.js	Pass token into getInstance; call identifyUserQueue before identify; cleanup identity getters.
javascript/mixpanel-core.js	Expose identifyUserQueue in core API.
ios/MixpanelReactNative.swift	Expose useGzipCompression in native initializer.
index.js	Add useGzipCompression parameter to public init signature.
android/src/.../MixpanelReactNativeModule.java	Add useGzipCompression to init and enable gzip.
android/build.gradle	Bump com.mixpanel.android to version 8.1.0.
tests/queue.test.js	Add mocks and tests for the extended identifyUserQueue flow.
tests/main.test.js	Mock and assert core.identifyUserQueue behavior in identify.
tests/index.test.js	Update test to expect useGzipCompression argument.
tests/jest_setup.js	Mock expo-crypto.randomUUID.
Samples/MixpanelExpo/App.js	Replace placeholder token (note: uses a real token here).
README.md	Update docs for useGzipCompression and formatting tweaks.
MixpanelReactNative.podspec	Bump Mixpanel-swift dependency to 5.0.0.

Files not reviewed (1)

• Samples/MixpanelExpo/package-lock.json: Language not supported

Comments suppressed due to low confidence (2)

javascript/mixpanel-queue.js:47

• The helper getPersistent is not defined in this module, causing a runtime error. Import or reference the persistent instance correctly (e.g., use MixpanelPersistent.getInstance() or define getPersistent).

(type === MixpanelType.USER && !getPersistent().isIdentified(token))

Samples/MixpanelExpo/App.js:17

• A real Mixpanel project token is exposed in the sample app. Replace it with a placeholder (e.g., YOUR_MIXPANEL_TOKEN) to avoid leaking credentials.

"26d77caa3b67accd112d74ecfc0214a4"

[rajgupta027]

It won't work in applications running on bare react-native-cli, getting below error. Add a suitable fallback or handle both cases to support expo and react native cli.

Additionally I have to install "expo-crypto": "^14.1.4" & "expo-modules-core": "^2.3.13" unnecessarily to make it work.

<----------------------ERROR-LOG------------------->
ERROR Error: Unable to resolve module expo-modules-core from /Users/admin_user/Desktop/AwesomeProject/node_modules/expo-crypto/build/Crypto.js: expo-modules-core could not be found within the project or in these directories:
node_modules
1 | import { toByteArray } from 'base64-js';

2 | import { UnavailabilityError } from 'expo-modules-core';
| ^
3 | import { CryptoDigestAlgorithm, CryptoEncoding } from './Crypto.types';
4 | import ExpoCrypto from './ExpoCrypto';
5 | export * from './Crypto.types';

[jaredmixpanel]

@rajgupta027 v3.1.1 has been released which makes expo-crypto and optional dependency