Wabt NPM | npm.io

wabt.js

wabt.js is a port of WABT to the Web, allowing you to manipulate WebAssembly modules using a JavaScript API.

Usage

$> npm install wabt

var wabt = require("wabt");

var wasm = ...; // a buffer holding the contents of a wasm file

var myModule = wabt.readWasm(wasm, { readDebugNames: true });
myModule.applyNames();

var wast = myModule.toText({ foldExprs: false, inlineExport: false });

console.log(wast);

The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through

$> npm install wabt@nightly

or you can use one of the previous versions instead if necessary.

API

parseWat(filename: string, buffer: string | Uint8Array): WasmModule Parses a wst source to a module.
readWasm(buffer: Uint8Array, options: ReadWasmOptions): WasmModule Reads a wasm binaryen to a module.
WasmModule A class representing a WebAssembly module.
- validate(): void Validates the module. Throws if not valid.
- resolveNames(): void Resolves names to indexes.
- generateNames(): void Generates textual names for function types, globals, labels etc.
- applyNames(): void Applies textual names. Throws on error.
- toText(options: ToTextOptions): string Converts the module to wat text format.
- toBinary(options: ToBinaryOptions): ToBinaryResult Converts the module to a wasm binary.
- destroy(): void Disposes the module and frees its resources.
ReadWasmOptions Options modifying the behavior of readWasm.
- readDebugNames: boolean Reads textual names from the name section.
ToTextOptions Options modifying the behavior of WasmModule#toText.
- foldExprs: boolean
- inlineExport: boolean
ToBinaryOptions Options modifying the behavior of WasmModule#toBinary.
- log: boolean
- canonicalize_lebs: boolean
- relocatable: boolean
- write_debug_names: boolean
ToBinaryResult Result object of WasmModule#toBinary.
- buffer: Uint8Array The wasm binary buffer.
- log: string Generated log output.

webassembly wasm

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