React-Native: signing out, clearing DataStore and creating new user throws errors when trying query DataStore

[nylki]

Describe the bug
When Auth.signOut() is called by a subsequent DataStore.clear(), Auth.signUp() and Auth.signIn() of that newly signed up user, results in errors when trying to query the DataStore for items that should be accessible by everybody:

 WARN  Possible Unhandled Promise Rejection (id: 0):
TypeError: undefined is not an object (evaluating 'storage.query')
http://192.168.127.115:8081/index.bundle?platform=ios&dev=true&minify=false:132391:31
[...snip]

When closing and re-opening the app, I can succesfully query the items that errored out previously.

To Reproduce
My App.js and schema.graphql: https://gist.github.com/nylki/fca10b04e215e777d5506d562f12c340
Users are configured to be able to signup with just username + password and are auto-confirmed in a pre-signup lampda-function.

Expected behavior
When signin out, calling DataStore.clear() and creating a new user, publicly accessible items in the synced DataStore should be resynced after signin or when querying.

Smartphone (please complete the following information):

• Device: iPhone X
• OS: iOS 13.2.3
• React-Native-App

my package.json:

"dependencies": {
        "@aws-amplify/core": "^2.2.5",
        "@aws-amplify/datastore": "^1.0.8",
        "@react-native-community/netinfo": "^5.5.1",
        "amazon-cognito-identity-js": "^3.2.5",
        "aws-amplify": "^2.2.6",
        "aws-amplify-react-native": "^3.2.2",
        "react": "^16.13.0",
        "react-native": "^0.61.5",
        "react-spring": "^8.0.27"
    },
    "devDependencies": {
        "@babel/core": "^7.6.2",
        "@babel/runtime": "^7.6.2",
        "@react-native-community/eslint-config": "^0.0.5",
        "babel-jest": "^24.9.0",
        "eslint": "^6.5.1",
        "eslint-config-standard": "^14.1.0",
        "eslint-plugin-import": "^2.20.1",
        "eslint-plugin-node": "^11.0.0",
        "eslint-plugin-promise": "^4.2.1",
        "eslint-plugin-react": "^7.19.0",
        "eslint-plugin-standard": "^4.0.1",
        "ini": "^1.3.5",
        "inquirer": "^6.5.1",
        "jest": "^24.9.0",
        "metro-react-native-babel-preset": "^0.56.0",
        "react-test-renderer": "16.9.0"
    },

[yirako]

It seems that DataStorage.clear() sets storage object to undefined and it doesn't get reconstructed on next calls.

Image

Looking at DataStorage source this is correct.

Image

Now looking at the internal start() function, looks like as initialized already has a value after using clear(), it falls into the else statement and doesn't set the storage var again

Image

Solution might be to also set initialized to undefined on clear()

[nylki]

super, thanks!

[github-actions]

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