`react-doctor/no-json-parse-stringify-clone`

JSON parse/stringify deep clone

Validation prompt

Use this to decide whether a fired diagnostic is real or a false positive.

Confirm the reported code matches JSON parse/stringify deep clone. Check the framework context and diagnostic message before suppressing it.

Use this once validation confirms the diagnostic is real.

Replace JSON.parse(JSON.stringify(value)) with structuredClone(value). It is faster and preserves Dates, Maps, Sets, and cyclic references.

More Performance rules from the rules reference:

react-doctor/no-large-animated-blur: Keep blur radius under 10px, or apply blur to a smaller element. Large blurs multiply GPU memory usage with layer size
react-doctor/no-layout-property-animation: Use `transform: translateX()` or `scale()` instead — they run on the compositor and skip layout/paint
react-doctor/no-layout-transition-inline: Use `transform` and `opacity` for transitions — they run on the compositor thread. For height animations, use `grid-template-rows: 0fr → 1fr`
react-doctor/no-long-transition-duration: Keep UI transitions under 1s — 100-150ms for instant feedback, 200-300ms for state changes, 300-500ms for layout changes. Use longer durations only for page-load hero animations
react-doctor/no-moment: Replace with `import { format } from 'date-fns'` (tree-shakeable) or `import dayjs from 'dayjs'` (2kb)