intial commit

Author: krikera

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x, 18.x, 20.x]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run build
+    - run: npm test 

.gitignore

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+# Dependency directories
+node_modules/
+
+# Build directories
+dist/
+coverage/
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Environment files
+.env
+.env.local
+.env.*.local
+
+# Log files
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# IDE files
+.idea/
+.vscode/
+*.sublime-project
+*.sublime-workspace
+
+# Test output files
+output.ts
+types.ts 

.npmignore

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+# Source files
+src/
+tsconfig.json
+jest.config.js
+
+# Git and GitHub files
+.git/
+.gitignore
+.github/
+
+# Test files
+*.test.ts
+*.spec.ts
+sample-data.json
+custom-data.json
+test-cli.sh
+
+# IDE files
+.idea/
+.vscode/
+
+# Logs
+*.log
+logs/
+
+# Miscellaneous
+.DS_Store
+Thumbs.db 

LICENSE

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+MIT License
+
+Copyright (c) 2025 json-typescript
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE. 

README.md

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+# json-to-ts-cvr
+
+[![npm version](https://img.shields.io/npm/v/json-to-ts-cvr.svg)](https://www.npmjs.com/package/json-to-ts-cvr)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![CI](https://github.com/krikera/json-typescript/actions/workflows/ci.yml/badge.svg)](https://github.com/krikera/json-typescript/actions/workflows/ci.yml)
+
+> A CLI tool to convert JSON structures into TypeScript interfaces or classes
+
+## Installation
+
+```bash
+# Install globally
+npm install -g json-to-ts-cvr
+
+# Or use with npx
+npx json-to-ts-cvr [options]
+```
+
+## Features
+
+- Convert JSON to TypeScript interfaces or classes
+- Support for nested objects and arrays
+- Generate proper type definitions (string, number, boolean, etc.)
+- Auto-generate interface names from property names
+- Customize interface/class names with prefixes
+- Handle nullable fields
+
+## Usage
+
+### Convert JSON string to TypeScript interface
+
+```bash
+json-to-ts-cvr '{"name": "John", "age": 25}'
+```
+
+Output:
+```typescript
+interface Root {
+  name: string;
+  age: number;
+}
+```
+
+### Convert JSON from a file and save to a TypeScript file
+
+```bash
+json-to-ts-cvr -i data.json -o types.ts
+```
+
+### Generate TypeScript classes instead of interfaces
+
+```bash
+json-to-ts-cvr -i data.json --class
+```
+
+Output:
+```typescript
+class Root {
+  name: string;
+  age: number;
+
+  constructor(data: any) {
+    this.name = data.name;
+    this.age = data.age;
+  }
+}
+```
+
+### Add a prefix to all interface/class names
+
+```bash
+json-to-ts-cvr -i data.json --prefix I
+```
+
+Output:
+```typescript
+interface IRoot {
+  name: string;
+  age: number;
+}
+```
+
+### Handle null values as union types
+
+```bash
+json-to-ts-cvr -i data.json --union-null
+```
+
+Output:
+```typescript
+interface Root {
+  name: string;
+  nickname: null;
+}
+```
+
+## Options
+
+| Option | Alias | Description |
+|--------|-------|-------------|
+| `--input <file>` | `-i` | Input JSON file path |
+| `--output <file>` | `-o` | Output TypeScript file path |
+| `--class` | | Generate TypeScript classes instead of interfaces |
+| `--union-null` | | Represent nullable fields as union types (field: string \| null) |
+| `--prefix <prefix>` | | Prepend a custom prefix to all interface/class names |
+| `--help` | `-h` | Display help information |
+| `--version` | `-v` | Display version information |
+
+## Examples
+
+### Complex nested objects
+
+Input:
+```json
+{
+  "user": {
+    "name": "John",
+    "address": {
+      "city": "New York",
+      "zipCode": 10001
+    },
+    "hobbies": ["reading", "gaming"]
+  }
+}
+```
+
+Output:
+```typescript
+interface Root {
+  user: User;
+}
+
+interface User {
+  name: string;
+  address: Address;
+  hobbies: string[];
+}
+
+interface Address {
+  city: string;
+  zipCode: number;
+}
+```
+
+## Development
+
+```bash
+# Clone the repository
+git clone https://github.com/krikera/json-typescript.git
+cd json-typescript
+
+# Install dependencies
+npm install
+
+# Build the project
+npm run build
+
+# Run tests
+npm test
+```
+
+## Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+1. Fork the repository
+2. Create your feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit your changes (`git commit -m 'Add some amazing feature'`)
+4. Push to the branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+## Publishing
+
+To publish to npm:
+
+```bash
+# Login to npm
+npm login
+
+# Publish package
+npm publish
+```
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details. 

jest.config.js

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+export default {
+  preset: 'ts-jest/presets/default-esm',
+  extensionsToTreatAsEsm: ['.ts'],
+  transform: {
+    '^.+\\.ts$': [
+      'ts-jest',
+      {
+        useESM: true,
+      },
+    ],
+  },
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
+  testEnvironment: 'node',
+};