TS · correctness

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no-json-stringify-error

Avoid generic JSON serialization that can omit native Error details.

noJsonStringifyError Rule source Tests Catalog JSON

Why

Native Error details are non-enumerable, so generic JSON serialization discards diagnostic information.

Fix

Serialize explicit error fields or use an error-aware serializer.

Examples

Before — flagged Do not stringify an Error object

src/report.ts

try {
  f();
} catch (err) {
  JSON.stringify({ error: err });
}

After — preferred Narrow an unknown catch value before selecting fields

src/report.ts

try {
  f();
} catch (err) {
  JSON.stringify({ error: err instanceof Error ? err.message : String(err) });
}