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@hazae41/bytes

v1.2.11

Published

Utilities to deal with Uint8Array

Downloads

244

Readme

Bytes

Utilities to deal with sized Uint8Array

npm i @hazae41/bytes

Node Package 📦

Features

  • 100% TypeScript and ESM
  • Rust-like patterns
  • Strongly typed Uint8Array and ArrayLike size
  • Zero-cost abstraction over Uint8Array and ArrayLike
  • Zero-copy conversion from ArrayBufferView
  • Use native Buffer for faster execution on Node
  • Unit-tested

Usage

Sized bytes

const bytes8 = Bytes.alloc(8) // Bytes<8>

Unsafe-allocated sized bytes

const bytes8 = Bytes.allocUnsafe(8) // Bytes<8>

Random sized bytes

const bytes8 = Bytes.random(8) // Bytes<8>

Unknown-sized bytes

const bytesX = new Uint8Array(8) // Bytes<number>

Runtime type-guarding

if (Bytes.is(bytesX, 8))
  bytesX // Bytes<8>
else
  bytesX // Bytes<number>

Type-guarded runtime equality check

if (Bytes.equals(bytesX, bytes8))
  bytesX // Bytes<8>
else
  bytesX // Bytes<number>

Runtime casting with Result pattern

const bytes16 = Bytes.tryCast(bytesX, 16).unwrap() // Bytes<16>

Conversion from sized arrays

const sized4 = Sized.cast([1, 2, 3, 4], 4).unwrap() // Sized<4>
const bytes4 = Bytes.from(sized4) // Bytes<4>

Utf8, Hex, Base64, Ascii encoding

Bytes.fromUtf8(Bytes.toUtf8(bytesX))
Bytes.fromHex(Bytes.toHex(bytesX))
Bytes.fromBase64(Bytes.toBase64(bytesX))
Bytes.fromAscii(Bytes.toAscii(bytesX))

BigInt conversion

Bytes.fromBigInt(Bytes.toBigInt(bytesX))

Sized slicing and padding

const bytes8 = Bytes.sliceOrPadStart(bytesX, 8) // Bytes<8>