By Team Hypomnema · Developer
Infer TypeScript types from sample JSON with nested arrays and unions.
Use the guide alongside the working tool.
Open JSON to TypeScript →Working input
{"id":1,"name":"Ada","tags":["admin"],"profile":{"active":true}}Infer TypeScript types from sample JSON with nested arrays and unions. Inference describes the supplied sample, not a validated API contract. Empty arrays become unknown[]. Review optional fields and domain constraints.
Input and purpose
Infer TypeScript types from sample JSON with nested arrays and unions.
Start with the working sample, then replace it with your own input. The sample input is: {"id":1,"name":"Ada","tags":["admin"],"profile":{"active":true}}
Review the result
Inference describes the supplied sample, not a validated API contract. Empty arrays become unknown[]. Review optional fields and domain constraints.
Run processes the current input on your device. Changing an input clears the previous output so you cannot accidentally export stale results.
Copy and export
Copy or download only after reviewing the exact generated text. Nothing is applied to your project or sent to an endpoint.
Use Undo sample to restore your draft. Clear inputs or close the tab when finished; no content is stored in localStorage.
Ready to apply this workflow?
Try JSON to TypeScript →Explore a related workflow
- JSONPath Explorer: examples and practical limits
Select JSON values with paths, indexes, wildcards and recursive descent.
- JSON Pointer Resolver: examples and practical limits
Resolve RFC 6901 pointers and show the exact selected JSON value.
- Structural JSON Diff: examples and practical limits
Compare JSON by structure and inspect added, removed and changed paths.
- JSON Merge Patch: examples and practical limits
Apply RFC 7396 merge patches and preview the resulting document.
Keep your original files and review the result. Found unclear instructions? Contact Team Hypomnema.