GocciaScript

A drop of JavaScript - A subset of ECMAScript 2020 implemented in FreePascal

Features

Language Features

• Variables: let and const declarations (no var)
• Functions: Arrow functions only (no function keyword)
• Loops: No traditional loops - use array methods instead
• Equality: Triple equals (===) only
• Strict Mode: Implicit (no need to declare)
• No eval: For security
• No arguments: Simplified argument handling due to not having an ES3-like function

ES6+ specific features

• Template strings
• Object shorthands

ECMAScript 2020+ native implementations

• Math.clamp
• Private fields and methods in classes

Example

class CoffeeShop {
  #name = "Goccia Coffee";
  #beans = ["Arabica", "Robusta", "Ethiopian"];
  #prices = { espresso: 2.5, latte: 4.0, cappuccino: 3.75 };

  getMenu() {
    return this.#beans.map((bean) => `${bean} blend`);
  }

  calculateTotal(order) {
    return order.reduce((total, item) => total + (this.#prices[item] ?? 0), 0);
  }

  get name() {
    return this.#name;
  }
}

const shop = new CoffeeShop();
const order = ["espresso", "latte"];
const total = shop.calculateTotal(order);

console.log(`Welcome to ${shop.name}!`);
console.log(`Your order total: $${total.toFixed(2)}`);

How To Use

Pre-compiled binaries

Integrate into host environment

Roadmap

• Module system
• HMR

Ideas to evaluate

• Performance tests

Concepts

• Explicitness: Modules, classes, methods and properties are exlicit even at the cost long names. Shortcuts are typically avoided.
• OOP over everything: Rely on type safety of specialised classes
• Define vs Assign: Explicitly defines a variable, assign re-assigns the value