Install flow tool for static analysis

[akobaidan]

Static analysis tool Flow is installed in the codebase through the command npm install --save-dev flow-bin. To configure the Node.js codebase to use the tool, a Flow script is added in package.json. The tool was then initialized through the command npm run flow init. This created a .flowconfig file that defines the tool's configuration to work correctly within the codebase. Additionally, the command npm run flow was deployed to launch the Flow server and confirm that no errors were found in the codebase.

The following screenshot of the terminal shows the output of running npm run flow init and executing npm run flow.

[coveralls]

Pull Request Test Coverage Report for Build 11654082662

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

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 (-0.02%) to 82.675%

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

Totals
Change from base Build 11475022613:	-0.02%
Covered Lines:	22362
Relevant Lines:	25627

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💛 - Coveralls

[mohamed-elzeni]

I have incorporated the changes made, installed the tool, and ran it. The output on my machine matches the one here. LGTM!

[lhitmi]

The tool installation looks good and functions as it should.