# Svelte JSON View Lite vs react-json-view-lite React 18/19 Original → API-Parity Svelte 5 Port ## Overview react-json-view-lite for Svelte 5: keep its familiar props, themes, and keyboard navigation in a runes-native port with typed snippets and SSR-safe IDs. - **Svelte JSON View Lite site:** https://jsonview.svelte.page - **Svelte JSON View Lite npm:** https://www.npmjs.com/package/%40humanspeak%2Fsvelte-json-view-lite - **Svelte JSON View Lite slug:** svelte-json-view-lite - **Category:** React upstream — not Svelte-native - **Approach:** React 18/19 source API; mechanical migration target for Svelte 5 - **Website:** https://github.com/AnyRoad/react-json-view-lite - **GitHub:** https://github.com/AnyRoad/react-json-view-lite - **npm:** https://www.npmjs.com/package/react-json-view-lite ## Feature comparison | Feature | @humanspeak/svelte-json-view-lite | react-json-view-lite | Notes | | --- | --- | --- | --- | | Framework Runtime | Svelte 5 | React 18/19 | Separate native implementations; the Svelte port does not ship React. | | JsonView API | Same component + core props | Original API | data, style, shouldExpandNode, clickToExpandNode, compactTopLevel, and beforeExpandChange retain their names and purpose. | | Theme API | Same style-map shape | defaultStyles + darkStyles | The built-in theme exports and StyleProps surface port directly. | | Expand Strategies | Same helpers | allExpanded + collapseAllNested | Existing expansion logic can move across without a new mental model. | | Keyboard Navigation | WAI-ARIA treeview | WAI-ARIA treeview | Both support arrow-key navigation through expandable nodes. | | TypeScript Support | Yes | Yes | | | Per-type Rendering | 9 typed Svelte snippets | No | The Svelte port adds overrides for labels and every primitive value type. | | SSR-safe ARIA IDs | Svelte $props.id() | React useId | Each implementation uses its framework-native stable-id primitive. | | CSS Variable Overrides | Yes | No | The Svelte port layers --sjv-* custom properties onto the familiar style map. | | Zero Runtime Dependencies | Yes | Yes | | | JSON Editing | No | No | | ## Svelte JSON View Lite strengths - Same JsonView component name and core prop names - Same defaultStyles, darkStyles, allExpanded, and collapseAllNested exports - Svelte 5 runes-native implementation with no React compatibility layer - Typed Svelte snippet overrides for primitive values and labels - SSR-safe ids through $props.id() - WAI-ARIA tree semantics with keyboard navigation - Light and dark themes with CSS-variable overrides - Zero runtime dependencies ## react-json-view-lite strengths - Original project and source of the shared API - Established package for React applications - React 18/19-native implementation - Accessible tree navigation with zero runtime dependencies ## Svelte JSON View Lite limitations - Focused on viewing, not editing - No virtualization for very large JSON documents - Smaller ecosystem than older React JSON viewers ## react-json-view-lite limitations - Requires React 18 or 19 - Cannot render as a native Svelte component - No typed Svelte snippet overrides - No --sjv-* CSS-variable override layer ## Verdict Stay with react-json-view-lite in a React 18 or 19 application. When moving to Svelte 5, switch the package import and component syntax, keep the familiar props, theme maps, and expansion helpers, then opt into typed snippets where useful. The migration is mechanical because this port deliberately preserves the upstream API shape. ## Keywords react-json-view-lite, react-json-view-lite svelte, react json view lite svelte, svelte react-json-view-lite port, react-json-view-lite alternative