Developer Tools
Extract JS Interface Names
Extract TypeScript interface names from pasted JavaScript or TypeScript source snippets without executing, compiling, fetching, or uploading code.
0 / 30,000 characters. No upload, storage, or account required.
JS interface extraction workflows
Use this extractor when copied TypeScript needs a quick local inventory of declared interfaces before API documentation, cleanup, or model migrations.
Audit TypeScript models
Pair interface names with Extract JS Type Aliases, Extract JS Class Names, and JSON to TypeScript.
Review module boundaries
Use Extract JS Export Statements, Extract JS Import Statements, and JavaScript Formatter.
Clean copied output
Send extracted names to Sort Lines, Remove Duplicate Lines, or Text Compare.
What this tool does
Extract JS Interface Names scans pasted source as text, lists interface declarations with source lines, removes duplicate names, and runs locally in your browser.
Common use cases
Extract TypeScript interface names from pasted JavaScript or TypeScript source snippets, declaration files, API models, React props, utility modules, or copied code before model audits, documentation, cleanup, refactors, or migration handoffs.
Use Extract JS Interface Names when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.
How to use it
- Paste TypeScript, declaration files, API model snippets, React props files, or copied source that contains interface declarations.
- Choose whether duplicate interface names should be removed and whether extracted names should be normalized for comparison.
- Review interface names with source line numbers, then copy the clean list for API audits, model cleanup, documentation, or migration handoffs.
Example workflow
Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.
Privacy note
Extract JS Interface Names runs locally in your browser. Your pasted code is not uploaded, compiled, rendered, fetched, executed, stored, or logged.
FAQ
Does Extract JS Interface Names compile TypeScript?
No. It scans pasted source as text and does not compile, type-check, execute, fetch dependencies, upload, store, or log snippets.
Which interfaces are included?
It finds common TypeScript interface declarations, including exported interfaces and interfaces with extends clauses, in pasted source snippets.
When is this useful?
Use it while auditing API models, reviewing React props, preparing TypeScript migrations, documenting declarations, or comparing generated models.
Explore more tools
Browse the Developer Tools hub or continue with the Developer Data Toolkit when this task is part of a larger workflow.