JavaScript Refresher and Detailed Study - Part 9
Last updated on 13 Oct 2026 Post series: Part 1 , Prev Part (8) , Post Series TOC Contents In Node.js, console.log(err) prints same output as console.log(err.stack) as it uses util.format() ... util.inspect() to generate string representation For local debugging, console.log(err) or console.error(err) is commonly used but for production, remote monitoring tools like Sentry ( Sentry.captureException(err) ) is appropriate try...catch is used in modern JS apps for API fetch operations and unpredictable third-party data but avoided in standard business logic and React rendering Custom error classes are rarely used in modern vanilla JS and React JS apps Wrapping error objects ( cause ) is a modern JS feature which is not commonly used in frontend apps but may be seen in modern backend Node.js codebases Early 2024 study of Promises Asynchronous JS code patterns brief timeline: Callback era (1995 – 2015), Promise standar...