Name: 'JSON to Types - Convert JSON to TypeScript/Python/Go'
Author: 'miccho27'

Convert JSON to TypeScript interfaces, Python dataclasses, Go structs, Rust structs, or Zod schemas. Select JSON, pick a language, get types instantly.

Features

5 Output Languages

TypeScript - export interface with proper types
Python - @dataclass with type hints
Go - struct with JSON tags
Rust - struct with serde derive macros
Zod - Schema with z.infer type extraction

Smart Type Inference

Detects string, number, boolean, null automatically
Distinguishes integers from floats
Handles nested objects as separate named types
Processes arrays with element type inference

Multiple Workflows

Select JSON in editor and run the command (Ctrl+Shift+J)
Right-click context menu on selected JSON
Convert from clipboard - paste JSON from any source

Nested Object Support

Complex nested JSON produces multiple separate types, each properly named from the key.

Example

Input JSON:

{
  "id": 1,
  "name": "Alice",
  "email": "[email protected]",
  "address": {
    "street": "123 Main St",
    "city": "Springfield"
  },
  "tags": ["admin", "user"]
}

TypeScript Output:

export interface Address {
  street: string;
  city: string;
}

export interface Root {
  id: number;
  name: string;
  email: string;
  address: Address;
  tags: string[];
}

Commands

Command	Keybinding	Description
JSON to Types: Convert Selection	Ctrl+Shift+J	Convert selected JSON
JSON to Types: Convert from Clipboard	-	Convert JSON from clipboard

Settings

Setting	Default	Description
`jsonToTypes.defaultLanguage`	`typescript`	Default output language
`jsonToTypes.rootName`	`Root`	Name of the root type
`jsonToTypes.optionalFields`	`false`	Mark all fields optional (TS)
`jsonToTypes.exportInterfaces`	`true`	Add export keyword (TS)

Use Cases

API Development: Paste API response JSON, get typed interfaces instantly
Database Modeling: Convert JSON documents to typed structs
Code Generation: Rapid prototyping with type-safe models
Learning: See how JSON maps to types in different languages

Installation

code --install-extension miccho27.json-to-types

Or search "JSON to Types" in the VS Code Extensions panel.

License

MIT