This repository has been archived on 2024-07-27. You can view files and clone it, but cannot push or open issues or pull requests.
keksAccountGUI/node_modulesOLD/@webassemblyjs/wasm-edit
2019-08-11 20:48:02 +02:00
..
esm Update Framework 2019-08-11 20:48:02 +02:00
lib Update Framework 2019-08-11 20:48:02 +02:00
LICENSE Update Framework 2019-08-11 20:48:02 +02:00
package.json Update Framework 2019-08-11 20:48:02 +02:00
README.md Update Framework 2019-08-11 20:48:02 +02:00
webassemblyjs-wasm-edit-1.7.10.tgz Update Framework 2019-08-11 20:48:02 +02:00

@webassemblyjs/wasm-edit

Rewrite a WASM binary

Replace in-place an AST node in the binary.

Installation

yarn add @webassemblyjs/wasm-edit

Usage

Update:

import { edit } from "@webassemblyjs/wasm-edit";

const binary = [/*...*/];

const visitors = {
  ModuleImport({ node }) {
    node.module = "foo";
    node.name = "bar";
  }
};

const newBinary = edit(binary, visitors);

Replace:

import { edit } from "@webassemblyjs/wasm-edit";

const binary = [/*...*/];

const visitors = {
  Instr(path) {
    const newNode = t.callInstruction(t.indexLiteral(0));
    path.replaceWith(newNode);
  }
};

const newBinary = edit(binary, visitors);

Remove:

import { edit } from "@webassemblyjs/wasm-edit";

const binary = [/*...*/];

const visitors = {
  ModuleExport({ node }) {
    path.remove()
  }
};

const newBinary = edit(binary, visitors);

Insert:

import { add } from "@webassemblyjs/wasm-edit";

const binary = [/*...*/];

const newBinary = add(actualBinary, [
  t.moduleImport("env", "mem", t.memory(t.limit(1)))
]);

Providing the AST

Providing an AST allows you to handle the decoding yourself, here is the API:

addWithAST(Program, ArrayBuffer, Array<Node>): ArrayBuffer;
editWithAST(Program, ArrayBuffer, visitors): ArrayBuffer;

Note that the AST will be updated in-place.