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Review Summary
Great work on this submission! Your application correctly meets all the core requirements, including parsing command-line arguments, validating the source path, and copying the file. I am approving your solution.
As a point of improvement for the future, consider using a non-zero exit code like process.exit(1) when an error occurs. It's a standard convention for command-line tools to signal failure, which allows them to be used more effectively in scripts. Since all functional requirements are met, this is just a suggestion for best practice and not a blocker. Well done!
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Footnotes
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| if (!source || !dest) { | ||
| console.error('Missing source or destination file path.'); | ||
| process.exit(0); |
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It's a standard convention for command-line applications to exit with a non-zero status code when an error occurs. Using process.exit(0) indicates success, which isn't the case when an error is encountered. Consider using process.exit(1) here and in all other error-handling blocks to properly signal that the script failed.
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