fix(events): update events react example code #8330
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Description of changes:
The purpose of this PR is to update the React code example for the Events API to use a React pattern that won't result in dangling subscriptions due to the 2x render of
useEffect
hooks whenReact.StrictMode
is enabled. Also, updated JSX to use index for key asdata.id
is not unique across subsequent events as it references the subscription id not the event id.Related GitHub issue #, if available:
aws-amplify/amplify-data#531
Instructions
If this PR should not be merged upon approval for any reason, please submit as a DRAFT
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Please add the product(s)/platform(s) affected to the PR title
Checks
Does this PR conform to the styleguide?
Does this PR include filetypes other than markdown or images? Please add or update unit tests accordingly.
Are any files being deleted with this PR? If so, have the needed redirects been created?
Are all links in MDX files using the MDX link syntax rather than HTML link syntax?
ref: MDX:
[link](https://docs.amplify.aws/)
HTML:
<a href="https://docs.amplify.aws/">link</a>
When this PR is ready to merge, please check the box below
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.