Local storage of comment and submission drafts

[emekaorji]

This PR adds the "Local storage of comment and submission drafts" suggested in the README.

Behaviour

• Store unsubmitted comments for any post in local storage
• If the user leaves and navigates back to that post to write a comment, they should find their previous unsubmitted comment still there
• Once the user submits, clear the comment

Scope

• The ReplyForm component is affected in making this change
• Adds a local storage hook to the lib folder

Test

• Setup and run the project locally using the guide in the README
• Navigate to a story in the browser; should look like this /item/[storyId]
• Begin writing a comment, the user should see the 'Saved to draft.' text beside the submit button
• Stop writing the comment and refresh the page. After refreshing, the previously written comment should still be in the text area
• Submit the form, this should clear the text from the text area and also from the local storage

Screenshot

[vercel]

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[emapeire]

Great approach!

[rauchg]

Awesome work! I'm trying to avoid introducing too many dependencies. Would you mind inlining a minimal implementation of the local storage logic in lib/?

[emekaorji]

Okay, sure! Doing that now.

[emekaorji]

Done! Added the hook to the lib dir
Also updated the PR description to include that change

[emapeire]

LGTM!