switch-in-fp

A functional programming-inspired switch-case implementation for JavaScript. Because why not?

🤔 What is this?

This package provides a functional programming-style switch-case implementation using the if library. It's like a regular switch-case, but with extra steps. Perfect for those who want to feel smarter while writing code that does the same thing as a plain old switch.

🚀 Features

• Functional Programming Vibes: Adds unnecessary complexity to your codebase.
• Duplicate Case Handling: Automatically ignores duplicate cases because i'm too lazy to throw errors.
• Edge Case Support: Handles null, undefined, empty strings, arrays, objects, and even negative numbers. (Why? I don't know either.)
• Error Handling: Catches errors in actions and logs them to the console. You're welcome.
• Asynchronous Actions: Supports async functions, Promises, setTimeout, and setInterval. Because blocking the event loop is so last year.
• Default Action: Provides an .else() method for handling unmatched cases.

📦 Installation

Install the package via npm:

npm install switch-in-fp

Or, if you're feeling adventurous:

yarn add switch-in-fp

🛠️ Usage

Here’s how you can use this package to make your code unnecessarily complex:

const { SwitcherFactory } = require('switch-in-fp');

Switch(42)
  .case(42, (v) => console.log(v))
  .case(43, (v) => console.log(v))
  .else(() => console.log('No matching case'))
  .execute();
// Output: 42

const result = Switch(42)
  .case(42, (v) => v * 2)
  .execute();
console.log(result); // Output: 84

Advanced Example

Switch(7)
  .case(7, () => {
    throw new Error('Something went wrong');
  })
  .else(() => console.log('Default action'))
  .execute();
// Logs the error and continues execution

Asynchronous Actions

Switch(6)
  .case(6, async () => {
    await new Promise((resolve) => setTimeout(resolve, 1000));
    console.log('Async action executed');
  })
  .execute();
// Waits 1 second, then logs "Async action executed"

🧪 Tests

Run the tests to ensure everything works as expected:

npm test

📜 License

This project is licensed under the MIT License. Do whatever you want with it, but don't blame us if it breaks your codebase.

⚠️ Warning

If you find yourself using this package to replace in real project a simple switch-case, please stop it. Get some help.

🙌 Contributing

Feel free to contribute! Or don't. I'm not your boss or mom.

💌 Feedback

If you have any feedback (or say what i'm a stupid), suggestions, or complaints, feel free to open an issue. Or don’t. It’s up to you.