fix: implement node:tty (#20892)

Fixes #21012
Closes https://github.com/denoland/deno/issues/20855
Fixes https://github.com/denoland/deno/issues/20890
Fixes https://github.com/denoland/deno/issues/20611
Fixes https://github.com/denoland/deno/issues/20336
Fixes `create-svelte` from https://github.com/denoland/deno/issues/17248

Fixes more reports here:
- https://github.com/denoland/deno/issues/6529#issuecomment-1432690559
- https://github.com/denoland/deno/issues/6529#issuecomment-1522059006
- https://github.com/denoland/deno/issues/6529#issuecomment-1695803570

cli/main.rs

@@ -272,6 +272,7 @@ pub(crate) fn unstable_warn_cb(feature: &str) {
 pub fn main() {
   setup_panic_hook();
 
+  util::unix::prepare_stdio();
   util::unix::raise_fd_limit();
   util::windows::ensure_stdio_open();
   #[cfg(windows)]

cli/tests/node_compat/config.jsonc

@@ -88,6 +88,7 @@
       "test-querystring.js",
       "test-readline-interface.js",
       "test-stdin-from-file-spawn.js",
+      "test-ttywrap-invalid-fd.js",
       "test-url-urltooptions.js",
       "test-util-format.js",
       "test-util-inspect-namespace.js",
@@ -625,6 +626,7 @@
       "test-timers-unref-throw-then-ref.js",
       "test-timers-user-call.js",
       "test-timers-zero-timeout.js",
+      "test-tty-stdin-end.js",
       "test-url-domain-ascii-unicode.js",
       "test-url-fileurltopath.js",
       "test-url-format-invalid-input.js",

cli/tests/node_compat/test/parallel/test-tty-stdin-end.js

@@ -0,0 +1,14 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+require('../common');
+
+// This test ensures that Node.js doesn't crash on `process.stdin.emit("end")`.
+// https://github.com/nodejs/node/issues/1068
+
+process.stdin.emit('end');

cli/tests/node_compat/test/parallel/test-ttywrap-invalid-fd.js

@@ -0,0 +1,74 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+// Flags: --expose-internals
+'use strict';
+
+// const common = require('../common');
+const tty = require('tty');
+// const { internalBinding } = require('internal/test/binding');
+// const {
+//   UV_EBADF,
+//   UV_EINVAL
+// } = internalBinding('uv');
+const assert = require('assert');
+
+assert.throws(
+  () => new tty.WriteStream(-1),
+  {
+    code: 'ERR_INVALID_FD',
+    name: 'RangeError',
+    message: '"fd" must be a positive integer: -1'
+  }
+);
+
+// {
+//   const info = {
+//     code: common.isWindows ? 'EBADF' : 'EINVAL',
+//     message: common.isWindows ? 'bad file descriptor' : 'invalid argument',
+//     errno: common.isWindows ? UV_EBADF : UV_EINVAL,
+//     syscall: 'uv_tty_init'
+//   };
+
+//   const suffix = common.isWindows ?
+//     'EBADF (bad file descriptor)' : 'EINVAL (invalid argument)';
+//   const message = `TTY initialization failed: uv_tty_init returned ${suffix}`;
+
+//   assert.throws(
+//     () => {
+//       common.runWithInvalidFD((fd) => {
+//         new tty.WriteStream(fd);
+//       });
+//     }, {
+//       code: 'ERR_TTY_INIT_FAILED',
+//       name: 'SystemError',
+//       message,
+//       info
+//     }
+//   );
+
+//   assert.throws(
+//     () => {
+//       common.runWithInvalidFD((fd) => {
+//         new tty.ReadStream(fd);
+//       });
+//     }, {
+//       code: 'ERR_TTY_INIT_FAILED',
+//       name: 'SystemError',
+//       message,
+//       info
+//     });
+// }
+
+assert.throws(
+  () => new tty.ReadStream(-1),
+  {
+    code: 'ERR_INVALID_FD',
+    name: 'RangeError',
+    message: '"fd" must be a positive integer: -1'
+  }
+);

cli/util/unix.rs

@@ -43,3 +43,27 @@ pub fn raise_fd_limit() {
     }
   }
 }
+
+pub fn prepare_stdio() {
+  #[cfg(unix)]
+  // SAFETY: Save current state of stdio and restore it when we exit.
+  unsafe {
+    use libc::atexit;
+    use libc::tcgetattr;
+    use libc::tcsetattr;
+    use libc::termios;
+
+    let mut termios = std::mem::zeroed::<termios>();
+    if tcgetattr(libc::STDIN_FILENO, &mut termios) == 0 {
+      static mut ORIG_TERMIOS: Option<termios> = None;
+      ORIG_TERMIOS = Some(termios);
+
+      extern "C" fn reset_stdio() {
+        // SAFETY: Reset the stdio state.
+        unsafe { tcsetattr(libc::STDIN_FILENO, 0, &ORIG_TERMIOS.unwrap()) };
+      }
+
+      atexit(reset_stdio);
+    }
+  }
+}

ext/node/lib.rs

@@ -270,6 +270,7 @@ deno_core::extension!(deno_node,
     ops::require::op_require_read_package_scope<P>,
     ops::require::op_require_package_imports_resolve<P>,
     ops::require::op_require_break_on_next_statement,
+    ops::util::op_node_guess_handle_type,
   ],
   esm_entry_point = "ext:deno_node/02_init.js",
   esm = [
@@ -490,7 +491,7 @@ deno_core::extension!(deno_node,
     "timers.ts" with_specifier "node:timers",
     "timers/promises.ts" with_specifier "node:timers/promises",
     "tls.ts" with_specifier "node:tls",
-    "tty.ts" with_specifier "node:tty",
+    "tty.js" with_specifier "node:tty",
     "url.ts" with_specifier "node:url",
     "util.ts" with_specifier "node:util",
     "util/types.ts" with_specifier "node:util/types",

ext/node/ops/mod.rs

@@ -6,6 +6,7 @@ pub mod http2;
 pub mod idna;
 pub mod os;
 pub mod require;
+pub mod util;
 pub mod v8;
 pub mod winerror;
 pub mod zlib;

ext/node/ops/util.rs

@@ -0,0 +1,83 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::error::AnyError;
+use deno_core::op2;
+use deno_core::OpState;
+use deno_core::ResourceHandle;
+use deno_core::ResourceHandleFd;
+
+#[repr(u32)]
+enum HandleType {
+  #[allow(dead_code)]
+  Tcp = 0,
+  Tty,
+  #[allow(dead_code)]
+  Udp,
+  File,
+  Pipe,
+  Unknown,
+}
+
+#[op2(fast)]
+pub fn op_node_guess_handle_type(
+  state: &mut OpState,
+  rid: u32,
+) -> Result<u32, AnyError> {
+  let handle = state.resource_table.get_handle(rid)?;
+
+  let handle_type = match handle {
+    ResourceHandle::Fd(handle) => guess_handle_type(handle),
+    _ => HandleType::Unknown,
+  };
+
+  Ok(handle_type as u32)
+}
+
+#[cfg(windows)]
+fn guess_handle_type(handle: ResourceHandleFd) -> HandleType {
+  use winapi::um::consoleapi::GetConsoleMode;
+  use winapi::um::fileapi::GetFileType;
+  use winapi::um::winbase::FILE_TYPE_CHAR;
+  use winapi::um::winbase::FILE_TYPE_DISK;
+  use winapi::um::winbase::FILE_TYPE_PIPE;
+
+  // SAFETY: Call to win32 fileapi. `handle` is a valid fd.
+  match unsafe { GetFileType(handle) } {
+    FILE_TYPE_DISK => HandleType::File,
+    FILE_TYPE_CHAR => {
+      let mut mode = 0;
+      // SAFETY: Call to win32 consoleapi. `handle` is a valid fd.
+      //         `mode` is a valid pointer.
+      if unsafe { GetConsoleMode(handle, &mut mode) } == 1 {
+        HandleType::Tty
+      } else {
+        HandleType::File
+      }
+    }
+    FILE_TYPE_PIPE => HandleType::Pipe,
+    _ => HandleType::Unknown,
+  }
+}
+
+#[cfg(unix)]
+fn guess_handle_type(handle: ResourceHandleFd) -> HandleType {
+  use std::io::IsTerminal;
+  // SAFETY: The resource remains open for the duration of borrow_raw.
+  if unsafe { std::os::fd::BorrowedFd::borrow_raw(handle).is_terminal() } {
+    return HandleType::Tty;
+  }
+
+  // SAFETY: It is safe to zero-initialize a `libc::stat` struct.
+  let mut s = unsafe { std::mem::zeroed() };
+  // SAFETY: Call to libc
+  if unsafe { libc::fstat(handle, &mut s) } == 1 {
+    return HandleType::Unknown;
+  }
+
+  match s.st_mode & 61440 {
+    libc::S_IFREG | libc::S_IFCHR => HandleType::File,
+    libc::S_IFIFO => HandleType::Pipe,
+    libc::S_IFSOCK => HandleType::Tcp,
+    _ => HandleType::Unknown,
+  }
+}

ext/node/polyfills/_process/streams.mjs

@@ -12,9 +12,9 @@ import {
   moveCursor,
 } from "ext:deno_node/internal/readline/callbacks.mjs";
 import { Duplex, Readable, Writable } from "node:stream";
-import { isWindows } from "ext:deno_node/_util/os.ts";
-import { fs as fsConstants } from "ext:deno_node/internal_binding/constants.ts";
 import * as io from "ext:deno_io/12_io.js";
+import * as tty from "node:tty";
+import { guessHandleType } from "ext:deno_node/internal_binding/util.ts";
 
 // https://github.com/nodejs/node/blob/00738314828074243c9a52a228ab4c68b04259ef/lib/internal/bootstrap/switches/is_main_thread.js#L41
 export function createWritableStdioStream(writer, name) {
@@ -95,60 +95,21 @@ export function createWritableStdioStream(writer, name) {
   return stream;
 }
 
-// TODO(PolarETech): This function should be replaced by
-// `guessHandleType()` in "../internal_binding/util.ts".
-// https://github.com/nodejs/node/blob/v18.12.1/src/node_util.cc#L257
 function _guessStdinType(fd) {
   if (typeof fd !== "number" || fd < 0) return "UNKNOWN";
-  if (Deno.isatty?.(fd)) return "TTY";
+  return guessHandleType(fd);
-
-  try {
-    const fileInfo = Deno.fstatSync?.(fd);
-
-    // https://github.com/nodejs/node/blob/v18.12.1/deps/uv/src/unix/tty.c#L333
-    if (!isWindows) {
-      switch (fileInfo.mode & fsConstants.S_IFMT) {
-        case fsConstants.S_IFREG:
-        case fsConstants.S_IFCHR:
-          return "FILE";
-        case fsConstants.S_IFIFO:
-          return "PIPE";
-        case fsConstants.S_IFSOCK:
-          // TODO(PolarETech): Need a better way to identify "TCP".
-          // Currently, unable to exclude UDP.
-          return "TCP";
-        default:
-          return "UNKNOWN";
-      }
-    }
-
-    // https://github.com/nodejs/node/blob/v18.12.1/deps/uv/src/win/handle.c#L31
-    if (fileInfo.isFile) {
-      // TODO(PolarETech): Need a better way to identify a piped stdin on Windows.
-      // On Windows, `Deno.fstatSync(rid).isFile` returns true even for a piped stdin.
-      // Therefore, a piped stdin cannot be distinguished from a file by this property.
-      // The mtime, atime, and birthtime of the file are "2339-01-01T00:00:00.000Z",
-      // so use the property as a workaround.
-      if (fileInfo.birthtime.valueOf() === 11644473600000) return "PIPE";
-      return "FILE";
-    }
-  } catch (e) {
-    // TODO(PolarETech): Need a better way to identify a character file on Windows.
-    // "EISDIR" error occurs when stdin is "null" on Windows,
-    // so use the error as a workaround.
-    if (isWindows && e.code === "EISDIR") return "FILE";
-  }
-
-  return "UNKNOWN";
 }
 
 const _read = function (size) {
   const p = Buffer.alloc(size || 16 * 1024);
-  io.stdin?.read(p).then((length) => {
+  io.stdin?.read(p).then(
-    this.push(length === null ? null : p.slice(0, length));
+    (length) => {
-  }, (error) => {
+      this.push(length === null ? null : p.slice(0, length));
-    this.destroy(error);
+    },
-  });
+    (error) => {
+      this.destroy(error);
+    },
+  );
 };
 
 /** https://nodejs.org/api/process.html#process_process_stdin */
@@ -172,17 +133,12 @@ export const initStdin = () => {
       });
       break;
     }
-    case "TTY":
+    case "TTY": {
+      stdin = new tty.ReadStream(fd);
+      break;
+    }
     case "PIPE":
     case "TCP": {
-      // TODO(PolarETech):
-      // For TTY, `new Duplex()` should be replaced `new tty.ReadStream()` if possible.
-      // There are two problems that need to be resolved.
-      // 1. Using them here introduces a circular dependency.
-      // 2. Creating a tty.ReadStream() is not currently supported.
-      // https://github.com/nodejs/node/blob/v18.12.1/lib/internal/bootstrap/switches/is_main_thread.js#L194
-      // https://github.com/nodejs/node/blob/v18.12.1/lib/tty.js#L47
-
       // For PIPE and TCP, `new Duplex()` should be replaced `new net.Socket()` if possible.
       // There are two problems that need to be resolved.
       // 1. Using them here introduces a circular dependency.

ext/node/polyfills/internal_binding/util.ts

@@ -28,10 +28,13 @@
 // TODO(petamoriken): enable prefer-primordials for node polyfills
 // deno-lint-ignore-file prefer-primordials
 
-import { notImplemented } from "ext:deno_node/_utils.ts";
+const core = globalThis.Deno.core;
+const ops = core.ops;
 
-export function guessHandleType(_fd: number): string {
+const handleTypes = ["TCP", "TTY", "UDP", "FILE", "PIPE", "UNKNOWN"];
-  notImplemented("util.guessHandleType");
+export function guessHandleType(fd: number): string {
+  const type = ops.op_node_guess_handle_type(fd);
+  return handleTypes[type];
 }
 
 export const ALL_PROPERTIES = 0;

ext/node/polyfills/process.ts

@@ -33,8 +33,6 @@ export { _nextTick as nextTick, chdir, cwd, env, version, versions };
 import {
   createWritableStdioStream,
   initStdin,
-  Readable,
-  Writable,
 } from "ext:deno_node/_process/streams.mjs";
 import {
   enableNextTick,
@@ -57,41 +55,9 @@ export let platform = "";
 // TODO(kt3k): This should be set at start up time
 export let pid = 0;
 
-// We want streams to be as lazy as possible, but we cannot export a getter in a module. To
+let stdin, stdout, stderr;
-// work around this we make these proxies that eagerly instantiate the underlying object on
-// first access of any property/method.
-function makeLazyStream<T>(objectFactory: () => T): T {
-  return new Proxy({}, {
-    get: function (_, prop, receiver) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.get(objectFactory() as any, prop, receiver);
-    },
-    has: function (_, prop) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.has(objectFactory() as any, prop);
-    },
-    ownKeys: function (_) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.ownKeys(objectFactory() as any);
-    },
-    set: function (_, prop, value, receiver) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.set(objectFactory() as any, prop, value, receiver);
-    },
-    getPrototypeOf: function (_) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.getPrototypeOf(objectFactory() as any);
-    },
-    getOwnPropertyDescriptor(_, prop) {
-      // deno-lint-ignore no-explicit-any
-      return Reflect.getOwnPropertyDescriptor(objectFactory() as any, prop);
-    },
-  }) as T;
-}
 
-export let stderr = makeLazyStream(getStderr);
+export { stderr, stdin, stdout };
-export let stdin = makeLazyStream(getStdin);
-export let stdout = makeLazyStream(getStdout);
 
 import { getBinding } from "ext:deno_node/internal_binding/mod.ts";
 import * as constants from "ext:deno_node/internal_binding/constants.ts";
@@ -646,19 +612,13 @@ class Process extends EventEmitter {
   memoryUsage = memoryUsage;
 
   /** https://nodejs.org/api/process.html#process_process_stderr */
-  get stderr(): Writable {
+  stderr = stderr;
-    return getStderr();
-  }
 
   /** https://nodejs.org/api/process.html#process_process_stdin */
-  get stdin(): Readable {
+  stdin = stdin;
-    return getStdin();
-  }
 
   /** https://nodejs.org/api/process.html#process_process_stdout */
-  get stdout(): Writable {
+  stdout = stdout;
-    return getStdout();
-  }
 
   /** https://nodejs.org/api/process.html#process_process_version */
   version = version;
@@ -906,52 +866,24 @@ internals.__bootstrapNodeProcess = function (
   core.setMacrotaskCallback(runNextTicks);
   enableNextTick();
 
+  stdin = process.stdin = initStdin();
+  /** https://nodejs.org/api/process.html#process_process_stdout */
+  stdout = process.stdout = createWritableStdioStream(
+    io.stdout,
+    "stdout",
+  );
+
+  /** https://nodejs.org/api/process.html#process_process_stderr */
+  stderr = process.stderr = createWritableStdioStream(
+    io.stderr,
+    "stderr",
+  );
+
   process.setStartTime(Date.now());
+
   // @ts-ignore Remove setStartTime and #startTime is not modifiable
   delete process.setStartTime;
   delete internals.__bootstrapNodeProcess;
 };
 
-// deno-lint-ignore no-explicit-any
-let stderr_ = null as any;
-// deno-lint-ignore no-explicit-any
-let stdin_ = null as any;
-// deno-lint-ignore no-explicit-any
-let stdout_ = null as any;
-
-function getStdin(): Readable {
-  if (!stdin_) {
-    stdin_ = initStdin();
-    stdin = stdin_;
-    Object.defineProperty(process, "stdin", { get: () => stdin_ });
-  }
-  return stdin_;
-}
-
-/** https://nodejs.org/api/process.html#process_process_stdout */
-function getStdout(): Writable {
-  if (!stdout_) {
-    stdout_ = createWritableStdioStream(
-      io.stdout,
-      "stdout",
-    );
-    stdout = stdout_;
-    Object.defineProperty(process, "stdout", { get: () => stdout_ });
-  }
-  return stdout_;
-}
-
-/** https://nodejs.org/api/process.html#process_process_stderr */
-function getStderr(): Writable {
-  if (!stderr_) {
-    stderr_ = createWritableStdioStream(
-      io.stderr,
-      "stderr",
-    );
-    stderr = stderr_;
-    Object.defineProperty(process, "stderr", { get: () => stderr_ });
-  }
-  return stderr_;
-}
-
 export default process;

ext/node/polyfills/tty.js

@@ -0,0 +1,83 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+import { ERR_INVALID_FD } from "ext:deno_node/internal/errors.ts";
+import { LibuvStreamWrap } from "ext:deno_node/internal_binding/stream_wrap.ts";
+import { providerType } from "ext:deno_node/internal_binding/async_wrap.ts";
+import { Duplex } from "node:stream";
+const { Error } = globalThis.__bootstrap.primordials;
+
+// Returns true when the given numeric fd is associated with a TTY and false otherwise.
+function isatty(fd) {
+  if (typeof fd !== "number") {
+    return false;
+  }
+  try {
+    return Deno.isatty(fd);
+  } catch (_) {
+    return false;
+  }
+}
+
+class TTY extends LibuvStreamWrap {
+  constructor(handle) {
+    super(providerType.TTYWRAP, handle);
+  }
+}
+
+export class ReadStream extends Duplex {
+  constructor(fd, options) {
+    if (fd >> 0 !== fd || fd < 0) {
+      throw new ERR_INVALID_FD(fd);
+    }
+
+    // We only support `stdin`.
+    if (fd != 0) throw new Error("Only fd 0 is supported.");
+
+    const tty = new TTY(Deno.stdin);
+    super({
+      readableHighWaterMark: 0,
+      handle: tty,
+      manualStart: true,
+      ...options,
+    });
+
+    this.isRaw = false;
+    this.isTTY = true;
+  }
+
+  setRawMode(flag) {
+    flag = !!flag;
+    this._handle.setRaw(flag);
+
+    this.isRaw = flag;
+    return this;
+  }
+}
+
+export class WriteStream extends Duplex {
+  constructor(fd) {
+    if (fd >> 0 !== fd || fd < 0) {
+      throw new ERR_INVALID_FD(fd);
+    }
+
+    // We only support `stdin`, `stdout` and `stderr`.
+    if (fd > 2) throw new Error("Only fd 0, 1 and 2 are supported.");
+
+    const tty = new TTY(
+      fd === 0 ? Deno.stdin : fd === 1 ? Deno.stdout : Deno.stderr,
+    );
+
+    super({
+      readableHighWaterMark: 0,
+      handle: tty,
+      manualStart: true,
+    });
+
+    const { columns, rows } = Deno.consoleSize();
+    this.columns = columns;
+    this.rows = rows;
+  }
+}
+
+export { isatty };
+export default { isatty, WriteStream, ReadStream };

ext/node/polyfills/tty.ts

@@ -1,25 +0,0 @@
-// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
-
-import { Socket } from "node:net";
-
-// Returns true when the given numeric fd is associated with a TTY and false otherwise.
-function isatty(fd: number) {
-  if (typeof fd !== "number") {
-    return false;
-  }
-  try {
-    return Deno.isatty(fd);
-  } catch (_) {
-    return false;
-  }
-}
-
-// TODO(kt3k): Implement tty.ReadStream class
-export class ReadStream extends Socket {
-}
-// TODO(kt3k): Implement tty.WriteStream class
-export class WriteStream extends Socket {
-}
-
-export { isatty };
-export default { isatty, WriteStream, ReadStream };

tools/node_compat/TODO.md

@@ -3,7 +3,7 @@
 
 NOTE: This file should not be manually edited. Please edit `cli/tests/node_compat/config.json` and run `deno task setup` in `tools/node_compat` dir instead.
 
-Total: 2924
+Total: 2923
 
 - [abort/test-abort-backtrace.js](https://github.com/nodejs/node/tree/v18.12.1/test/abort/test-abort-backtrace.js)
 - [abort/test-abort-fatal-error.js](https://github.com/nodejs/node/tree/v18.12.1/test/abort/test-abort-fatal-error.js)
@@ -2356,7 +2356,6 @@ Total: 2924
 - [parallel/test-trace-exit.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-trace-exit.js)
 - [parallel/test-tracing-no-crash.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-tracing-no-crash.js)
 - [parallel/test-tty-backwards-api.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-tty-backwards-api.js)
-- [parallel/test-tty-stdin-end.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-tty-stdin-end.js)
 - [parallel/test-tty-stdin-pipe.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-tty-stdin-pipe.js)
 - [parallel/test-ttywrap-invalid-fd.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-ttywrap-invalid-fd.js)
 - [parallel/test-ttywrap-stack.js](https://github.com/nodejs/node/tree/v18.12.1/test/parallel/test-ttywrap-stack.js)