@webassemblyjs/wasm-parser

What is @webassemblyjs/wasm-parser?

The @webassemblyjs/wasm-parser package is a tool for parsing WebAssembly binaries (.wasm files) into a format that is easier to interact with in JavaScript. It can be used to analyze and manipulate WebAssembly modules without having to execute them.

What are @webassemblyjs/wasm-parser's main functionalities?

Parsing WebAssembly binaries

This feature allows you to parse .wasm files into an abstract syntax tree (AST) that represents the structure and content of the WebAssembly module.

const { decode } = require('@webassemblyjs/wasm-parser');
const fs = require('fs');

const wasmBuffer = fs.readFileSync('module.wasm');
const ast = decode(wasmBuffer);

console.log(ast);

Other packages similar to @webassemblyjs/wasm-parser

wabt

The 'wabt' package is a set of tools for WebAssembly, built around the WebAssembly Binary Toolkit. It includes functionality to convert between the binary and text representations of WebAssembly, as well as to validate and execute WebAssembly code. It is more comprehensive than @webassemblyjs/wasm-parser, offering a wider range of tools for working with WebAssembly.

wasmparser

The 'wasmparser' package is another WebAssembly binary parser that provides an API for parsing WebAssembly modules. It is designed for performance and can be used in both Node.js and browser environments. Compared to @webassemblyjs/wasm-parser, it may offer better performance and a different API design that might be preferred in certain use cases.

binaryen

The 'binaryen' package provides a compiler and toolchain infrastructure for WebAssembly. It includes capabilities for optimizing WebAssembly modules, converting between binary and text formats, and generating WebAssembly code. While @webassemblyjs/wasm-parser focuses on parsing, 'binaryen' offers a broader set of tools for compiling and optimizing WebAssembly code.

README

@webassemblyjs/wasm-parser

WebAssembly binary format parser

Installation

yarn add @webassemblyjs/wasm-parser

Usage

import { decode } from "@webassemblyjs/wasm-parser";
import { readFileSync } from "fs";

const binary = readFileSync("/path/to/module.wasm");

const decoderOpts = {};
const ast = decode(binary, decoderOpts);

Decoder options

• dump: print dump information while decoding (default false)
• ignoreCodeSection: ignore the code section (default false)
• ignoreDataSection: ignore the data section (default false)