What is @webassemblyjs/wasm-gen?
The @webassemblyjs/wasm-gen package is a tool that allows for the generation of WebAssembly binary code. It is part of the WebAssembly.js project which aims to provide a set of tools to compile, decompile, validate, and manipulate WebAssembly modules. With wasm-gen, developers can programmatically create WebAssembly binaries using an Abstract Syntax Tree (AST) representation of the code.
Generating WebAssembly binary
This feature allows the generation of WebAssembly binary code from an AST. The code sample demonstrates how to create a simple WebAssembly module with no imports, one function, and no exports, and then encode it into a binary format.
const { encode } = require('@webassemblyjs/wasm-gen');
const t = require('@webassemblyjs/ast');
const module = t.module(
[],
[
t.func(t.indexLiteral(0), [], [], [])
],
[]
);
const binary = encode(module);
console.log(binary);