base64.wasm

WebAssembly port of Base64 and Base64URL

npm i @hazae41/base64.wasm

Node Package 📦

Features

• Reproducible building
• Pre-bundled and streamed
• Zero-copy memory slices

Modules

• base64ct

Algorithms

• Base64
• Base64URL

Usage

import { Base64Wasm, base64_encode_padded, base64_decode_padded } from "@hazae41/base64.wasm";

// Wait for WASM to load
await Base64Wasm.initBundled();

const bytes = crypto.getRandomValues(new Uint8Array(256))
using memory = new Memory(bytes)

const text = base64_encode_padded(memory)
using memory2 = base64_decode_padded(text)

console.log(memory2.bytes)

Building

Unreproducible building

You need to install Rust

Then, install wasm-pack

cargo install wasm-pack

Finally, do a clean install and build

npm ci && npm run build

Reproducible building

You can build the exact same bytecode using Docker, just be sure you're on a linux/amd64 host

docker compose up --build

Then check that all the files are the same using git status

git status --porcelain

If the output is empty then the bytecode is the same as the one I commited

Automated checks

Each time I commit to the repository, the GitHub's CI does the following:

• Clone the repository
• Reproduce the build using docker compose up --build
• Throw an error if the git status --porcelain output is not empty

Each time I release a new version tag on GitHub, the GitHub's CI does the following:

• Clone the repository
• Do not reproduce the build, as it's already checked by the task above
• Throw an error if there is a npm diff between the cloned repository and the same version tag on NPM

If a version is present on NPM but not on GitHub, do not use!