js-morse

A lightweight library for encoding and decoding Morse code with support for both ESM and CJS.

Installation

npm install js-morse

Usage

import { encode, decode, isValidMorseCode } from "js-morse";

// Encode text to Morse code
const morse = encode("hello");
console.log(morse); // '.... . .-.. .-.. ---'

// Decode Morse code to text
const text = decode(".... . .-.. .-.. ---");
console.log(text); // 'hello'

// Uppercase letters are prefixed with ^
const upperMorse = encode("SOS");
console.log(upperMorse); // '^... ^--- ^...'

// Spaces are represented with /
const withSpace = encode("hello world");
console.log(withSpace); // '.... . .-.. .-.. --- / .-- --- .-. .-.. -..'

// Validate Morse code
console.log(isValidMorseCode(".... . .-.. .-.. ---")); // true
console.log(isValidMorseCode("invalid")); // false

API

encode(text: string): string

Converts text to Morse code.

• Lowercase letters are encoded directly
• Uppercase letters are prefixed with ^
• Spaces are converted to /
• Supports letters (a-z) and numbers (0-9)

decode(morseText: string): string

Converts Morse code back to text.

• Morse codes prefixed with ^ are decoded as uppercase
• / is converted to space
• Returns lowercase by default

isValidMorseCode(morseText: string): boolean

Checks if a string contains valid Morse code patterns.

License

MIT