There are a lot of options in persistConfig that aren't mentioned in the README. We should add a section to the README that documents each option you can declare in a persistConfig.

Describe the bug
In the react native Auth library the SignIn component does not have a pending state and the Sign In button can be tapped again before the request completes. This leads to an exception that crashes the app.

https://github.com/aws-amplify/amplify-js/blob/3e423d017a98362a0117e1218dc3fa55abbff609/packages/aws-amplify-react-native/src/Auth/SignIn.tsx#L103

To Reproduce

The node dependencies are quite out-of-date for the React UI, let's update to the latest version we can without breaking anything.

Local PV (device) provisioner leaves a stale BDC in the following case:

• On PVC request, creates a BDC
• If the system doesn't have a matching BD, then PVC request keeps retrying, and so does the NDM operator that keeps retrying
• Now if the user deletes the PVC, then Local PV (device) provisioner doesn't get the trigger to process delete, as there was no PVC.

This causes the stale BDC

I read the docs of dexie-export-import thoroughly, however I didn't find a way how to add onto the current database when importing the data. It either completely replaces the whole table or merges and overwrites any row with the same id.

What I'd like to do is to import the data with new id's, while keeping the old data in the table intact.

Here is an issues with detailed description: NekR/offline-plugin#77

Page: Using a JavaScript module as a worker

This code example appends a canvas to the existing canvas#output, which is not valid. Maybe replace canvas#output to div#output, or reusing canvas#output to paint the image without creating a new one every time.

-<canvas id="output"></canvas>
+<div id="output"></div>

Currently, notifications show time in the format HH:MM:SS:

We want instead to check the browser locales and display the time according to the user location/preferences. Date formatting should be done either natively (i18n module, cf. [here](https://developer.mozill