feat: init

node_modules/@tybys/wasm-util/lib/cjs/wasi/index.js

@@ -0,0 +1,192 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createAsyncWASI = exports.WASI = void 0;
+const preview1_1 = require("./preview1");
+const util_1 = require("./util");
+// eslint-disable-next-line spaced-comment
+const kEmptyObject = /*#__PURE__*/ Object.freeze(/*#__PURE__*/ Object.create(null));
+const kExitCode = Symbol('kExitCode');
+const kSetMemory = Symbol('kSetMemory');
+const kStarted = Symbol('kStarted');
+const kInstance = Symbol('kInstance');
+const kBindingName = Symbol('kBindingName');
+function validateOptions(options) {
+    var _a;
+    (0, util_1.validateObject)(options, 'options');
+    let _WASI;
+    if (options.version !== undefined) {
+        (0, util_1.validateString)(options.version, 'options.version');
+        switch (options.version) {
+            case 'unstable':
+                _WASI = preview1_1.WASI;
+                this[kBindingName] = 'wasi_unstable';
+                break;
+            case 'preview1':
+                _WASI = preview1_1.WASI;
+                this[kBindingName] = 'wasi_snapshot_preview1';
+                break;
+            default:
+                throw new TypeError(`unsupported WASI version "${options.version}"`);
+        }
+    }
+    else {
+        _WASI = preview1_1.WASI;
+        this[kBindingName] = 'wasi_snapshot_preview1';
+    }
+    if (options.args !== undefined) {
+        (0, util_1.validateArray)(options.args, 'options.args');
+    }
+    const args = ((_a = options.args) !== null && _a !== void 0 ? _a : []).map(String);
+    const env = [];
+    if (options.env !== undefined) {
+        (0, util_1.validateObject)(options.env, 'options.env');
+        Object.entries(options.env).forEach(({ 0: key, 1: value }) => {
+            if (value !== undefined) {
+                env.push(`${key}=${value}`);
+            }
+        });
+    }
+    const preopens = [];
+    if (options.preopens !== undefined) {
+        (0, util_1.validateObject)(options.preopens, 'options.preopens');
+        Object.entries(options.preopens).forEach(({ 0: key, 1: value }) => preopens.push({ mappedPath: String(key), realPath: String(value) }));
+    }
+    if (preopens.length > 0) {
+        if (options.fs === undefined) {
+            throw new Error('filesystem is disabled, can not preopen directory');
+        }
+        try {
+            (0, util_1.validateObject)(options.fs, 'options.fs');
+        }
+        catch (_) {
+            throw new TypeError('Node.js fs like implementation is not provided');
+        }
+    }
+    // if (options.filesystem !== undefined) {
+    //   validateObject(options.filesystem, 'options.filesystem')
+    //   validateString(options.filesystem.type, 'options.filesystem.type')
+    //   if (options.filesystem.type !== 'memfs' && options.filesystem.type !== 'file-system-access-api') {
+    //     throw new Error(`Filesystem type ${(options.filesystem as any).type as string} is not supported, only "memfs" and "file-system-access-api" is supported currently`)
+    //   }
+    //   try {
+    //     validateObject(options.filesystem.fs, 'options.filesystem.fs')
+    //   } catch (_) {
+    //     throw new Error('Node.js fs like implementation is not provided')
+    //   }
+    // }
+    if (options.print !== undefined)
+        (0, util_1.validateFunction)(options.print, 'options.print');
+    if (options.printErr !== undefined)
+        (0, util_1.validateFunction)(options.printErr, 'options.printErr');
+    if (options.returnOnExit !== undefined) {
+        (0, util_1.validateBoolean)(options.returnOnExit, 'options.returnOnExit');
+    }
+    // const { stdin = 0, stdout = 1, stderr = 2 } = options
+    // validateInt32(stdin, 'options.stdin', 0)
+    // validateInt32(stdout, 'options.stdout', 0)
+    // validateInt32(stderr, 'options.stderr', 0)
+    // const stdio = [stdin, stdout, stderr] as const
+    const stdio = [0, 1, 2];
+    return {
+        args,
+        env,
+        preopens,
+        stdio,
+        _WASI
+    };
+}
+function initWASI(setMemory, wrap) {
+    this[kSetMemory] = setMemory;
+    this.wasiImport = wrap;
+    this[kStarted] = false;
+    this[kExitCode] = 0;
+    this[kInstance] = undefined;
+}
+/** @public */
+class WASI {
+    constructor(options = kEmptyObject) {
+        const { args, env, preopens, stdio, _WASI } = validateOptions.call(this, options);
+        const wrap = _WASI.createSync(args, env, preopens, stdio, options.fs, options.print, options.printErr);
+        const setMemory = wrap._setMemory;
+        delete wrap._setMemory;
+        initWASI.call(this, setMemory, wrap);
+        if (options.returnOnExit) {
+            wrap.proc_exit = wasiReturnOnProcExit.bind(this);
+        }
+    }
+    finalizeBindings(instance, _a) {
+        var _b;
+        var { memory = (_b = instance === null || instance === void 0 ? void 0 : instance.exports) === null || _b === void 0 ? void 0 : _b.memory } = _a === void 0 ? {} : _a;
+        if (this[kStarted]) {
+            throw new Error('WASI instance has already started');
+        }
+        (0, util_1.validateObject)(instance, 'instance');
+        (0, util_1.validateObject)(instance.exports, 'instance.exports');
+        this[kSetMemory](memory);
+        this[kInstance] = instance;
+        this[kStarted] = true;
+    }
+    // Must not export _initialize, must export _start
+    start(instance) {
+        this.finalizeBindings(instance);
+        const { _start, _initialize } = this[kInstance].exports;
+        (0, util_1.validateFunction)(_start, 'instance.exports._start');
+        (0, util_1.validateUndefined)(_initialize, 'instance.exports._initialize');
+        let ret;
+        try {
+            ret = _start();
+        }
+        catch (err) {
+            if (err !== kExitCode) {
+                throw err;
+            }
+        }
+        if (ret instanceof Promise) {
+            return ret.then(() => this[kExitCode], (err) => {
+                if (err !== kExitCode) {
+                    throw err;
+                }
+                return this[kExitCode];
+            });
+        }
+        return this[kExitCode];
+    }
+    // Must not export _start, may optionally export _initialize
+    initialize(instance) {
+        this.finalizeBindings(instance);
+        const { _start, _initialize } = this[kInstance].exports;
+        (0, util_1.validateUndefined)(_start, 'instance.exports._start');
+        if (_initialize !== undefined) {
+            (0, util_1.validateFunction)(_initialize, 'instance.exports._initialize');
+            return _initialize();
+        }
+    }
+    getImportObject() {
+        return { [this[kBindingName]]: this.wasiImport };
+    }
+}
+exports.WASI = WASI;
+function wasiReturnOnProcExit(rval) {
+    this[kExitCode] = rval;
+    // eslint-disable-next-line @typescript-eslint/no-throw-literal
+    throw kExitCode;
+}
+/** @public */
+async function createAsyncWASI(options = kEmptyObject) {
+    const _this = Object.create(WASI.prototype);
+    const { args, env, preopens, stdio, _WASI } = validateOptions.call(_this, options);
+    if (options.asyncify !== undefined) {
+        (0, util_1.validateObject)(options.asyncify, 'options.asyncify');
+        (0, util_1.validateFunction)(options.asyncify.wrapImportFunction, 'options.asyncify.wrapImportFunction');
+    }
+    const wrap = await _WASI.createAsync(args, env, preopens, stdio, options.fs, options.print, options.printErr, options.asyncify);
+    const setMemory = wrap._setMemory;
+    delete wrap._setMemory;
+    initWASI.call(_this, setMemory, wrap);
+    if (options.returnOnExit) {
+        wrap.proc_exit = wasiReturnOnProcExit.bind(_this);
+    }
+    return _this;
+}
+exports.createAsyncWASI = createAsyncWASI;
+//# sourceMappingURL=index.js.map