rslts

Go-inspired, type-safe error handling for TypeScript

Features

• Go-Like Multiple Return Values: Simulate Go's multiple return value pattern with a type-safe Result type
• Comprehensive Error Handling: Handle errors explicitly and avoid silent failures
• Error Chaining: Track the source of errors through the call stack

Installation

npm install rslts

Example

import { ok, err, Result } from "rslts";

function divide(a: number, b: number): Result<number> {
  if (b === 0) {
    return err(new Error("Division by zero"));
  }
  return ok(a / b);
}

const result = divide(10, 2);
if (!result.success) {
  return console.error(result.error.message);
}
console.log(result.value); // 5

Key Concepts

• Result<T, E>: A type that represents either a successful value or an error
• ok(value): Create a successful result
• err(error): Create an error result
• Exhaustive Checking: TypeScript forces you to handle both success and error cases

License

MIT License