memory.wasm

Zero-copy memory for WebAssembly

1npm i @hazae41/memory.wasm

Node Package 📦

Features

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

Usage

1import { ExampleWasm, Memory, example_method } from "@hazae41/example.wasm";
2
3// Wait for initialization
4await ExampleWasm.initBundled();
5
6// Pass bytes to memory
7using memory = new Memory();
8
9// View bytes from memory
10console.log(memory.bytes)
11
12// Call method with 0-copy
13example_method(memory)

Building

Unreproducible building

You need to install Rust

Then, install wasm-pack

1cargo install wasm-pack

Finally, do a clean install and build

1npm 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

1docker compose up --build

Then check that all the files are the same using git status and npm diff

1git status && npm diff

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

Automated checks

Each time I release a new version on GitHub, the GitHub's CI clones the GitHub repository, reproduces the build, and throws an error if the NPM release is different. If a version is present on NPM but not on GitHub, do not use!