AsynchronousLesson 13Free preview

Node Errors Handling

This lesson is part of Node.js · All levels

Summary

It provides a variety of strategies for handling errors, from callback error-first, try/catch to Promise, to the uncaughtException handler as the final safety net. The best practice is to handle the error as close as possible to the source and always check the status of the HTTP response. That way, one failure doesn't instantly crash the whole process. (Node.js)

Key points

Use try/catch on the await code to capture runtime error
Always check the fetch before processing the body response
Set process.on('uncaughtException') as the last safety net
UnhandledRejection marks a promise that fails without handling the catch

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