Cpp.js

Bind C++ to JavaScript with no extra code.
WebAssembly & React Native

Getting Started · Integrate Into Existing Project · C++ Bindings · Showcase

Basic Usage

src/index.js

import { initCppJs, Factorial } from './native/Factorial.h';

await initCppJs();
const factorial = new Factorial(99999);
const result = factorial.calculate();
console.log(result);

src/native/Factorial.h

class Factorial {
private:
    int number;

public:
    Factorial(int num) : number(num) {}

    int calculate() {
        if (number < 0) return -1;

        int result = 1;
        for (int i = 2; i <= number; i++) {
            result *= i;
        }
        return result;
    }
};

Prerequisites

To begin building your project with Cpp.js, you’ll first need to install a few dependencies:

• Docker
• Node.js version 18 or higher
• CMake version 3.28 or higher (only required for Mobile development)
• Xcode (only required for iOS development)
• Cocoapods (only required for iOS development)

Create a New Project

To set up a new cpp.js project with a minimal starter structure, execute the following command in your terminal:

npm create cpp.js@latest

License

MIT

Copyright (c) 2025, Buğra Sarı