refactor: 将文件从子目录提升到仓库根目录
所有文件从 hello_js_reverse_skill/ 子目录移至仓库根目录， 使项目结构更清晰，便于作为 Skill 直接引用。 Made-with: Cursor
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/**
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* WASM 环境补全模块
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* 为不同类型的 WASM（Emscripten、wasm-bindgen 等）提供最小运行环境
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*/
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/**
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* 补全 wasm-bindgen (Rust) 生成的 WASM 所需的环境
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* 常见于 Rust 编写的加密模块
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*/
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function patchWasmBindgen() {
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class Window {
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constructor() {
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this.document = {
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body: {},
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head: {},
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createElement: () => ({}),
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getElementById: () => null,
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querySelector: () => null,
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};
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}
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}
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const win = new Window();
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win.window = win;
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win.self = win;
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win.globalThis = win;
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globalThis.Window = Window;
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globalThis.window = win;
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globalThis.self = win;
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globalThis.document = win.document;
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// wasm-bindgen 可能使用 TextEncoder/TextDecoder
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if (typeof TextEncoder === 'undefined') {
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const { TextEncoder, TextDecoder } = require('util');
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globalThis.TextEncoder = TextEncoder;
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globalThis.TextDecoder = TextDecoder;
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}
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return win;
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}
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/**
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* 补全 Emscripten 生成的 WASM 所需的环境
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*/
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function patchEmscripten() {
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return {
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print: console.log,
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printErr: console.error,
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TOTAL_MEMORY: 16777216,
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TOTAL_STACK: 5242880,
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noInitialRun: true,
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noExitRuntime: true,
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onRuntimeInitialized: null,
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preRun: [],
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postRun: [],
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};
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}
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/**
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* 补全 Go WASM 所需的环境
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*/
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function patchGoWasm() {
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globalThis.process = globalThis.process || { argv: ['node'], env: {} };
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globalThis.fs = globalThis.fs || require('fs');
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// Go WASM 需要 performance.now
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if (typeof performance === 'undefined') {
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globalThis.performance = {
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now: () => Date.now(),
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};
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}
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// Go WASM 需要 crypto.getRandomValues
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if (typeof globalThis.crypto === 'undefined') {
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const nodeCrypto = require('crypto');
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globalThis.crypto = {
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getRandomValues: (arr) => {
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const bytes = nodeCrypto.randomBytes(arr.length);
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arr.set(bytes);
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return arr;
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},
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};
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}
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}
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/**
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* 清理环境补丁（测试完成后调用）
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*/
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function cleanupPatches() {
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delete globalThis.Window;
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delete globalThis.window;
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delete globalThis.self;
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delete globalThis.document;
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}
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module.exports = { patchWasmBindgen, patchEmscripten, patchGoWasm, cleanupPatches };
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@@ -0,0 +1,115 @@
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/**
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* WASM 加载与执行模块
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* 在 Node.js 中加载 WebAssembly 模块并调用导出函数
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*/
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const fs = require('fs');
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const path = require('path');
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/**
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* 加载本地 WASM 文件
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* @param {string} wasmPath - WASM 文件路径
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* @param {Object} importObject - 导入对象（环境依赖）
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* @returns {Object} WASM 实例的 exports
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*/
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async function loadWasmFromFile(wasmPath, importObject = {}) {
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const wasmBuffer = fs.readFileSync(wasmPath);
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return loadWasm(wasmBuffer, importObject);
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}
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/**
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* 从 URL 下载并加载 WASM
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* @param {string} url - WASM 文件 URL
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* @param {Object} importObject - 导入对象
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* @returns {Object} WASM 实例的 exports
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*/
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async function loadWasmFromURL(url, importObject = {}) {
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const axios = require('axios');
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const response = await axios.get(url, { responseType: 'arraybuffer' });
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return loadWasm(response.data, importObject);
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}
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/**
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* 从二进制数据加载 WASM
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*/
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async function loadWasm(wasmBuffer, importObject = {}) {
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const defaultImports = {
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env: {
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memory: new WebAssembly.Memory({ initial: 256, maximum: 512 }),
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table: new WebAssembly.Table({ initial: 0, element: 'anyfunc' }),
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abort: (msg, file, line, col) => {
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console.error(`WASM abort at ${file}:${line}:${col}: ${msg}`);
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},
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__memory_base: 0,
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__table_base: 0,
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...importObject.env,
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},
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wasi_snapshot_preview1: {
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fd_write: () => 0,
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fd_read: () => 0,
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fd_close: () => 0,
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fd_seek: () => 0,
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fd_fdstat_get: () => 0,
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environ_sizes_get: () => 0,
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environ_get: () => 0,
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proc_exit: (code) => { throw new Error(`WASM proc_exit(${code})`); },
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clock_time_get: () => BigInt(Date.now()) * 1000000n,
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...importObject.wasi_snapshot_preview1,
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},
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...importObject,
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};
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// 检查 WASM 需要哪些导入
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const module = await WebAssembly.compile(wasmBuffer);
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const requiredImports = WebAssembly.Module.imports(module);
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// 确保所有需要的导入都存在
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for (const imp of requiredImports) {
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if (!defaultImports[imp.module]) {
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defaultImports[imp.module] = {};
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}
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if (!defaultImports[imp.module][imp.name]) {
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switch (imp.kind) {
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case 'function':
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defaultImports[imp.module][imp.name] = () => {};
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break;
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case 'global':
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defaultImports[imp.module][imp.name] = new WebAssembly.Global({ value: 'i32', mutable: true }, 0);
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break;
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case 'memory':
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defaultImports[imp.module][imp.name] = new WebAssembly.Memory({ initial: 256 });
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break;
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case 'table':
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defaultImports[imp.module][imp.name] = new WebAssembly.Table({ initial: 0, element: 'anyfunc' });
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break;
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}
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}
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}
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const instance = await WebAssembly.instantiate(module, defaultImports);
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return {
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exports: instance.exports,
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module,
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instance,
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imports: requiredImports,
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};
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}
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/**
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* 分析 WASM 模块的导出和导入
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*/
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async function analyzeWasm(wasmPath) {
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const wasmBuffer = fs.readFileSync(wasmPath);
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const module = await WebAssembly.compile(wasmBuffer);
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const exports = WebAssembly.Module.exports(module);
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const imports = WebAssembly.Module.imports(module);
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return {
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exports: exports.map(e => ({ name: e.name, kind: e.kind })),
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imports: imports.map(i => ({ module: i.module, name: i.name, kind: i.kind })),
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};
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}
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module.exports = { loadWasmFromFile, loadWasmFromURL, loadWasm, analyzeWasm };
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