How to use this developer tool
- Paste or upload TypeScript.
- Choose outline, JSON, or CSV output.
- Select included declaration details.
- Run the parser and use the result as a navigation or documentation aid.
#117 · Programming Language Developer Tool
TypeScript Parser
Extract a structural outline of TypeScript imports, exports, interfaces, type aliases, enums, classes, functions, methods, generics, and declarations with line numbers.
Developer Input
Browser-based source processingchars
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What this developer tool does
The parser creates a declaration map and code outline using a lightweight lexical scanner. It does not claim to produce a compiler AST.
String/comment masking → declaration detection → brace range mapping → line/signature extraction → outline serialization.
Complex TSX, decorators, overloads, and unusual syntax may require review because this is a structural parser.
Example
Input:
export interface User { id: number; }
export async function loadUser(): Promise<User> { return { id: 1 }; }Expected use: Run the selected mode and review the generated output and statistics.Tips for better output
- Use JSON output for downstream tooling.
- Line numbers refer to the original source.
- Keywords inside strings and comments are ignored.
- Use the official compiler API when a complete AST is required.
FAQ
How can I parse TypeScript interfaces online?
Run the parser with members enabled to extract interface names, lines, and signatures.
How do I extract TypeScript functions and classes?
The declaration map lists functions and classes with line numbers.
How can I create a TypeScript code outline?
Choose Outline text and run the parser.
How do I list exported TypeScript declarations?
Exported declarations are marked in each outline or JSON record.
How can I convert TypeScript structure into JSON?
Choose JSON report to download a machine-readable declaration list.
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Supported analysis and output
| Module | Purpose |
|---|---|
| Input | Local browser processing |
| Analysis | Tool-specific lexical and structural logic |
| Output | Copy and download ready |
| Privacy | No upload or server execution |