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JavaScript Node.js Basics Handling Errors in Node Handle Status Code Errors

Samuel Kleos
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Samuel Kleos
Front End Web Development Techdegree Student 13,307 Points
Posted by Samuel Kleos
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Samuel Kleos
Front End Web Development Techdegree Student 13,307 Points

Why create a new Error object just to print a statusCode error?

Why do you need to do this: 

statusCodeError = new Error(http.STATUS_CODES[response.statusCode])
printError(statusCodeError);

If you can just do this: 

console.print(http.STATUS_CODES[response.statusCode]);

1 Answer

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

The lesson begins with the creation of the "printError" method, and then all errors in processing are converted to make use of it. This is consistent with the "separation of concerns" design principle.

Your specific optimization does save a line of code, but it relies on knowledge of the internals of "printError". Should that be changed in the future (by a developer unaware of the dependency), this particular condition will no longer be handled consistently with the others.