@borewit/text-codec

A lightweight alternative implementation of TextEncoder / TextDecoder supporting common encodings missing in some JavaScript engines and Node.js builds.
Works in environments like Hermes (React Native) or Small-ICU Node.js where only UTF-8 and UTF-16LE are available.

| Encoding | Hermes — Encode | Hermes — Decode | Small-ICU Node.js — Encode | Small-ICU Node.js — Decode | |---------------------------|---------------------|---------------------|--------------------------------|--------------------------------| | utf-8 / utf8 | ➕ | Native | Native | Native | | utf-16le | ➕ | ➕ | Native | Native | | ascii | ➕ | ➕ | ➕ | ➕ | | latin1 / iso-8859-1 | ➕ | ➕ | ➕ | Native (sometimes) | | windows-1252 | ➕ | ➕ | ➕ | ➕ |

Legend:

• Native — Supported natively by the JavaScript engine.
• ➕ — Support added by this module.
• Native (sometimes) — Available in some builds (e.g., certain Small-ICU Node.js builds).

When your project needs to handle encodings like latin1 / iso-8859-1 or windows-1252 in these environments, native TextDecoder / TextEncoder may throw an error or return incorrect results.

✨ Features

• Decoding and encoding
• Lightweight
• Typed

Supported encodings:

• utf-8 / utf8
• utf-16le
• ascii
• latin1 / iso-8859-1
• windows-1252

📦 Installation

npm install @borewit/text-codec

📚 API Documentation

textDecode(bytes, encoding): string

Decodes binary data into a JavaScript string using the specified encoding.

Parameters

• bytes (Uint8Array) — The binary data to decode.
• encoding (SupportedEncoding, optional) — Encoding type. Defaults to "utf-8".

Returns

• string — The decoded text.

Example

import { textDecode } from "@borewit/text-encode";

const bytes = new Uint8Array([0x48, 0x65, 0x6c, 0x6c, 0x6f]);
const text = textDecode(bytes, "ascii");
console.log(text); // "Hello"

Encodes a JavaScript string into binary form using the specified encoding.

textEncode(input, encoding): Uint8Array

Parameters

• input (string) — The string to encode.
• encoding (SupportedEncoding, optional) — Encoding type. Defaults to "utf-8".

Returns

Uint8Array — The encoded binary data.

Example:

import { textEncode } from "@borewit/text-encode";

const bytes = textEncode("Hello", "utf-16le");
console.log(bytes); // Uint8Array([...])

📜 Licence

This project is licensed under the MIT License. Feel free to use, modify, and distribute as needed.