Integration of Flow for Static Type Checking

[khalifat3]

This pull request integrates Flow static type checker into the test/topics.js module of the NodeBB project. The integration aims to enhance code quality and reliability by catching type mismatches and other common errors at compile time.

Key Changes:

• Installed flow-bin as a dev dependency to enable static type checking.
• Created a .flowconfig file to configure the Flow tool according to our project's requirements.
• Updated test/topics.js to include Flow annotations and conducted an initial run to identify potential type errors.

Results: Running Flow has revealed multiple issues in test/topics.js, indicating areas where our type usage could be corrected to prevent runtime errors.

Screenshots:

• Command line output showing Flow installation and execution results.
• Git status indicating the addition of the .flowconfig file.
• Errors displayed in the IDE with Flow annotations in test/topics.js.

[coveralls]

Pull Request Test Coverage Report for Build 11475563503

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.006%) to 82.686%

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Files with Coverage Reduction	New Missed Lines	%
src/meta/errors.js	1	76.74%

Totals
Change from base Build 11442726769:	-0.006%
Covered Lines:	22351
Relevant Lines:	25612

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💛 - Coveralls

[kwarraich]

installation of the flow tool looks good, and it seems to be working as expected since it passes the tests