TypeScript tool

Free Online TypeScript Interface Extractor

TypeScript Interface Extractor statically scans supplied TypeScript source and extracts the supported declarations or references into a focused, reviewable result.

Working tool

TypeScript Interface Extractor

This tool runs in your browser. Input is not sent to our server or saved.

Maximum input: 500 KB
Input0 chars · 0 bytes
ResultWaiting for input

Your result will appear here after you run the tool.

Use TypeScript Interface Extractor when you need a quick, reviewable answer about TypeScript source code supplied by the user. The page focuses on a single job: it should statically extract interface declarations from what you provide and show a structured list of detected interface declarations, with source context or locations where supported. Because the output is meant to be inspected rather than blindly trusted, the surrounding explanations emphasize what the tool can determine, what settings matter, and where a larger project context may still be required.

Because TypeScript combines JavaScript syntax with a type system, the same source can behave differently under different compiler options. TypeScript Interface Extractor keeps its scope tied to the settings and input that are actually provided.

Why This Tool Exists

TypeScript Interface Extractor turns source into a focused inventory. Instead of manually reading an entire snippet, you can isolate the declarations, references, or dependencies that its supported static analysis can detect. Its concrete output is a structured list of detected interface declarations, with source context or locations where supported.

The scope of TypeScript Interface Extractor is deliberately narrow. It receives TypeScript source code supplied by the user and applies its documented operation only to that material. It should not invent missing project context, silently assume runtime values, or present guessed information as if it were measured from the source.

Expected Input and Output

TypeScript Interface Extractor expects TypeScript source code supplied by the user. It should reject or clearly report input it cannot understand instead of inventing a plausible result. That matters because malformed or unsupported syntax can make a fabricated output look convincing even when no valid analysis or transformation occurred.

The primary TypeScript Interface Extractor result is a structured list of detected interface declarations, with source context or locations where supported. A useful result must be easy to review as well as technically appropriate. Source positions, before-and-after views, labels, diagnostics, or structured sections should appear when they help explain exactly what happened.

Working With the Page

Begin TypeScript Interface Extractor with a representative snippet or structured value rather than unrelated project content. Confirm the selected mode and any available options, then run the operation. Keep the original easy to compare so you can understand exactly what changed or what the analyzer found.

For TypeScript Interface Extractor, practical situations include inventorying interface declarations in a snippet, reviewing unfamiliar source before editing it, and feeding a focused list into code review or documentation work. Those use cases benefit from the same discipline: keep the input representative, keep the operation scoped, and interpret a structured list of detected interface declarations, with source context or locations where supported in the context where it will eventually be used.

Compact Example

Input

import { format } from './format.js';
const count = 2;
function run() { return format(count); }
class Worker {}

Result

Detected declarations and references are listed with their supported source locations.

This compact TypeScript Interface Extractor example shows the intended relationship between supplied input and the page result. It is deliberately small so the behavior is easy to inspect, and it does not imply that one sample covers every supported syntax form, project configuration, or edge case.

Technical Method

The planned technical basis for TypeScript Interface Extractor is TypeScript Compiler API. For TypeScript Interface Extractor, using the TypeScript compiler or Compiler API keeps parsing, emission, or diagnostics aligned with TypeScript syntax instead of approximating it with regular expressions.

With TypeScript Interface Extractor, the same input and the same settings should produce the same result through TypeScript Compiler API, except where the purpose itself is intentionally non-deterministic, such as shuffling. Parser, compiler, transformer, or analyzer errors should be shown clearly instead of being converted into generic success messages.

Useful Development Cases

Useful TypeScript Interface Extractor scenarios include inventorying interface declarations in a snippet, reviewing unfamiliar source before editing it, and feeding a focused list into code review or documentation work. In each scenario, you already have concrete source or data and need a focused operation rather than a broad automated rewrite.

TypeScript Interface Extractor can also support learning because you can change one part of the input and see how a structured list of detected interface declarations, with source context or locations where supported changes. That is useful for experimenting with TypeScript syntax, source structure, framework conventions, transformation behavior, or static analysis without mixing the experiment with unrelated application code.

Controls and Defaults

Any configurable TypeScript Interface Extractor behavior needs a clear default and an understandable effect on the output. Extraction should be AST based whenever the registry specifies AST or compiler analysis. The page should explain which declaration forms and syntax patterns are recognized.

Defaults in TypeScript Interface Extractor should be safe and unsurprising for its purpose of trying to statically extract interface declarations from the supplied material. If a control can produce a more aggressive transformation, broader diagnostic set, different target environment, or different interpretation, the consequence should be understandable before execution.

Safe Expectations

TypeScript Interface Extractor should be explicit about where its source analysis or transformation ends and wider project behavior begins. Static extraction sees only the source that is provided. Dynamically created names, runtime imports, computed behavior, generated code, and references in missing files may not be discoverable.

TypeScript results from TypeScript Interface Extractor can depend on compiler options, declarations, library files, module resolution, project references, and surrounding source. The page can isolate a useful question, but a structured list of detected interface declarations, with source context or locations where supported should not be presented as a complete substitute for running the compiler in the real project.

After the Tool Runs

After reviewing the output, decide whether it belongs in the codebase, in a test case, in documentation, or simply in your understanding of the problem. TypeScript Interface Extractor is intentionally scoped so the result can support that decision without making broader claims about the whole application.

If TypeScript Interface Extractor produces something you plan to use in production code, verify a structured list of detected interface declarations, with source context or locations where supported with the same tests, type checks, lint rules, build commands, browser checks, or framework checks your project normally uses. That keeps this focused utility in the role of a time-saving helper while project-specific verification remains responsible for integration issues.

Sensitive Input

Sensitive code deserves the same care in TypeScript Interface Extractor as it does in an issue tracker or online editor. Review the live privacy details before using confidential material and never infer local-only processing from the appearance of the interface.