proto-inherit

A small utility for setting up prototype inheritance between JavaScript constructor functions — no more manual Object.create() and constructor fixing.
Built with Vite.

📦 Installation

npm install proto-inherit

🚀 Usage

import { inheritPrototype } from "proto-inherit";

// Parent constructor
function Parent(name) {
  this.name = name;
}
Parent.prototype.sayHi = function () {
  console.log(`Hi, I'm ${this.name}`);
};

// Child constructor
function Child(name, age) {
  Parent.call(this, name); // Call parent constructor
  this.age = age;
}

// Set up prototype inheritance
inheritPrototype(Child, Parent);

Child.prototype.sayAge = function () {
  console.log(`I'm ${this.age} years old`);
};

const kid = new Child("Alice", 10);
kid.sayHi();   // Hi, I'm Alice
kid.sayAge();  // I'm 10 years old

🛠 API

inheritPrototype(Child, Parent)

Sets up prototype inheritance between Child and Parent.

• Child — The child constructor function
• Parent — The parent constructor function
• Returns the Child constructor for chaining

What it does internally:

1. Sets Child.prototype = Object.create(Parent.prototype)
2. Restores Child.prototype.constructor = Child
3. Adds Child.superClass = Parent for convenience

📜 License

MIT License © 2025 Prince Verma