[Codegen 112] - Extract the content into handleEventHandler

[kyawthura-gg]

Summary:

Part of #34872

Extract the content of the if branches that handle the EventHandlers (Flow, TypeScript) into a handleEventHandler function in parsers-commons.js. This will take a name, a typeAnnotation, a parser and a findEventArgumentsAndType function as parameters. Use the switch based approach from TypeScript.

Changelog:

[Internal][Changed]: Extract the content into handleEventHandler

Test Plan:

yarn test react-native-codegen

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	8,892,884	-1
android	hermes	armeabi-v7a	7,941,609	-3
android	hermes	x86	9,290,645	+1
android	hermes	x86_64	9,192,284	-1
android	jsc	arm64-v8a	9,485,476	+0
android	jsc	armeabi-v7a	8,427,162	-1
android	jsc	x86	9,469,399	+1
android	jsc	x86_64	9,783,778	+3

Base commit: 7709aad
Branch: main

[cipolleschi]

Great job! Thanks for continuing working on this! :D

[facebook-github-bot]

@cipolleschi has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[github-actions]

This pull request was successfully merged by @kyawthura-gg in ccd191d.

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