JavaScript's Error.cause property (ES2022) enables error chaining by preserving original error context and stack traces when re-throwing errors. Instead of losing information through string concatenation, developers can pass the original error as a cause parameter, maintaining the full error chain across multiple layers. The
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The problem with traditional error handlingIntroducing Error.causeWhat it looks like in practiceBefore cause : hacky workaroundsWorks with custom errors, tooBetter test assertionsGotchas and best practicesRecursively log the full error chainChaining errors across layersBrowser and runtime supportModern error chainingSort: