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-/**
- * The WASI API provides an implementation of the [WebAssembly System Interface](https://wasi.dev/) specification. WASI gives sandboxed WebAssembly applications access to the
- * underlying operating system via a collection of POSIX-like functions.
- *
- * ```js
- * import { readFile } from 'fs/promises';
- * import { WASI } from 'wasi';
- * import { argv, env } from 'process';
- *
- * const wasi = new WASI({
- * args: argv,
- * env,
- * preopens: {
- * '/sandbox': '/some/real/path/that/wasm/can/access'
- * }
- * });
- *
- * // Some WASI binaries require:
- * // const importObject = { wasi_unstable: wasi.wasiImport };
- * const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
- *
- * const wasm = await WebAssembly.compile(
- * await readFile(new URL('./demo.wasm', import.meta.url))
- * );
- * const instance = await WebAssembly.instantiate(wasm, importObject);
- *
- * wasi.start(instance);
- * ```
- *
- * To run the above example, create a new WebAssembly text format file named`demo.wat`:
- *
- * ```text
- * (module
- * ;; Import the required fd_write WASI function which will write the given io vectors to stdout
- * ;; The function signature for fd_write is:
- * ;; (File Descriptor, *iovs, iovs_len, nwritten) -> Returns number of bytes written
- * (import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
- *
- * (memory 1)
- * (export "memory" (memory 0))
- *
- * ;; Write 'hello world\n' to memory at an offset of 8 bytes
- * ;; Note the trailing newline which is required for the text to appear
- * (data (i32.const 8) "hello world\n")
- *
- * (func $main (export "_start")
- * ;; Creating a new io vector within linear memory
- * (i32.store (i32.const 0) (i32.const 8)) ;; iov.iov_base - This is a pointer to the start of the 'hello world\n' string
- * (i32.store (i32.const 4) (i32.const 12)) ;; iov.iov_len - The length of the 'hello world\n' string
- *
- * (call $fd_write
- * (i32.const 1) ;; file_descriptor - 1 for stdout
- * (i32.const 0) ;; *iovs - The pointer to the iov array, which is stored at memory location 0
- * (i32.const 1) ;; iovs_len - We're printing 1 string stored in an iov - so one.
- * (i32.const 20) ;; nwritten - A place in memory to store the number of bytes written
- * )
- * drop ;; Discard the number of bytes written from the top of the stack
- * )
- * )
- * ```
- *
- * Use [wabt](https://github.com/WebAssembly/wabt) to compile `.wat` to `.wasm`
- *
- * ```console
- * $ wat2wasm demo.wat
- * ```
- *
- * The `--experimental-wasi-unstable-preview1` CLI argument is needed for this
- * example to run.
- * @experimental
- * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/wasi.js)
- */
-declare module 'wasi' {
- interface WASIOptions {
- /**
- * An array of strings that the WebAssembly application will
- * see as command line arguments. The first argument is the virtual path to the
- * WASI command itself.
- */
- args?: string[] | undefined;
- /**
- * An object similar to `process.env` that the WebAssembly
- * application will see as its environment.
- */
- env?: object | undefined;
- /**
- * This object represents the WebAssembly application's
- * sandbox directory structure. The string keys of `preopens` are treated as
- * directories within the sandbox. The corresponding values in `preopens` are
- * the real paths to those directories on the host machine.
- */
- preopens?: NodeJS.Dict<string> | undefined;
- /**
- * By default, WASI applications terminate the Node.js
- * process via the `__wasi_proc_exit()` function. Setting this option to `true`
- * causes `wasi.start()` to return the exit code rather than terminate the
- * process.
- * @default false
- */
- returnOnExit?: boolean | undefined;
- /**
- * The file descriptor used as standard input in the WebAssembly application.
- * @default 0
- */
- stdin?: number | undefined;
- /**
- * The file descriptor used as standard output in the WebAssembly application.
- * @default 1
- */
- stdout?: number | undefined;
- /**
- * The file descriptor used as standard error in the WebAssembly application.
- * @default 2
- */
- stderr?: number | undefined;
- }
- /**
- * The `WASI` class provides the WASI system call API and additional convenience
- * methods for working with WASI-based applications. Each `WASI` instance
- * represents a distinct sandbox environment. For security purposes, each `WASI`instance must have its command-line arguments, environment variables, and
- * sandbox directory structure configured explicitly.
- * @since v13.3.0, v12.16.0
- */
- class WASI {
- constructor(options?: WASIOptions);
- /**
- * Attempt to begin execution of `instance` as a WASI command by invoking its`_start()` export. If `instance` does not contain a `_start()` export, or if`instance` contains an `_initialize()`
- * export, then an exception is thrown.
- *
- * `start()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`. If
- * `instance` does not have a `memory` export an exception is thrown.
- *
- * If `start()` is called more than once, an exception is thrown.
- * @since v13.3.0, v12.16.0
- */
- start(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
- /**
- * Attempt to initialize `instance` as a WASI reactor by invoking its`_initialize()` export, if it is present. If `instance` contains a `_start()`export, then an exception is thrown.
- *
- * `initialize()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`.
- * If `instance` does not have a `memory` export an exception is thrown.
- *
- * If `initialize()` is called more than once, an exception is thrown.
- * @since v14.6.0, v12.19.0
- */
- initialize(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
- /**
- * `wasiImport` is an object that implements the WASI system call API. This object
- * should be passed as the `wasi_snapshot_preview1` import during the instantiation
- * of a [`WebAssembly.Instance`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance).
- * @since v13.3.0, v12.16.0
- */
- readonly wasiImport: NodeJS.Dict<any>; // TODO: Narrow to DOM types
- }
-}
-declare module 'node:wasi' {
- export * from 'wasi';
-}