JSONToTable

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How to Convert TypeScript to JSON - Step by Step Guide

Step 1

Input Your TypeScript Code

Start by pasting your TypeScript interface, type definition, or object that needs to be converted to JSON format. The tool supports interfaces, type aliases, object literals, and nested structures.

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Paste TypeScript code: Copy your TypeScript interface or object directly into the editor
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Upload a file: Load TypeScript code from a .ts or .txt file on your computer
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Try samples: Click sample buttons to see different TypeScript patterns (interfaces, types, objects)

Example: TypeScript Interface/Object

Here's a typical TypeScript interface:

const user: User = {
  name: 'Alex Chen',
  age: 29,
  isActive: true,
  roles: ['developer', 'admin']
};
Step 2

Click Convert Button

Click the green "Convert" button to send your TypeScript code to our Python backend API for processing. The converter uses tree-sitter AST parsing to transform TypeScript syntax to JSON format, handling type annotations, interfaces, and proper formatting.

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Type stripping: TypeScript type annotations are removed for JSON output
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Interface conversion: TypeScript interfaces convert to example JSON objects
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Quote standardization: Single quotes ('') become double quotes ("") for JSON compliance
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Generic types: Handles TypeScript generics and complex type definitions
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Nested structures: Handle complex TypeScript data hierarchies with nested interfaces and types

Example: Converted JSON Output

The same data in JSON format:

{
  "name": "Alex Chen",
  "age": 29,
  "isActive": true,
  "roles": [
    "developer",
    "admin"
  ]
}
Step 3

Get Valid JSON Output

The tool produces properly formatted, valid JSON that's ready to use in your applications, APIs, or configurations.

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Real-time validation: Green checkmark confirms your JSON is syntactically correct
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Proper formatting: Beautified with correct indentation and structure
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Ready for APIs: Use directly in Node.js, Express, NestJS, or any TypeScript REST API
Step 4

Copy or Download JSON

Copy the JSON to your clipboard or download it as a .json file for use in your TypeScript projects, web applications, or REST APIs.

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Copy to clipboard for immediate use
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Download .json file for integration into your codebase
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Use in TS frameworks: Perfect for Node.js, NestJS, Angular, React with TypeScript
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Export options: Convert to readable tables or minify for production

What is TypeScript to JSON Conversion?

TypeScript to JSON conversion transforms TypeScript interfaces, types, and objects into standard JSON format. This process strips type annotations and converts TypeScript-specific syntax into JSON-compliant format for data interchange and API communication.

The conversion is essential for Node.js, NestJS, and Angular applications where JSON is the standard format for REST API requests and responses. You can also convert other languages like JavaScript to JSON or Python to JSON using our related tools.

Frequently Asked Questions

How do I convert TypeScript interface to JSON?

Simply paste your TypeScript interface or object into the converter. It will automatically strip type annotations and convert TypeScript syntax to valid JSON format. The output can then be formatted or minified based on your needs.

Does the converter handle TypeScript generics?

Yes! The converter properly handles TypeScript generics, union types, intersection types, and other advanced TypeScript features, converting them to appropriate JSON representations. You can also convert the reverse direction using our JSON to TypeScript converter.

What TypeScript types are supported?

The converter supports TypeScript interfaces, type aliases, objects, arrays, strings, numbers, booleans, null, and nested structures. Type annotations are stripped during conversion to produce clean JSON output.

Is the output valid JSON?

Yes! The converter produces standard, valid JSON that can be used in any application or API. The output is properly formatted and validated. You can further validate the JSON or convert it to other formats like C# or Python.

Is the TypeScript to JSON converter free?

Yes, completely free with no limitations on data size or conversion frequency. No registration required. Check out our other free tools like JSON formatter, JSON validator, and JSON to Table converter.

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