feat: `Deno.{stdin,stdout,stderr}.isTerminal()`, deprecate `Deno.isatty()` (#22011)

This change:
1. Implements `Deno.stdin.isTerminal()`, `Deno.stdout.isTerminal()` and
`Deno.stderr.isTerminal()`.
2. Deprecates `Deno.isatty()` for removal in Deno v2, in favour of the
above instance methods.
3. Replaces use of `Deno.isatty()` with the above instance methods.

Related #21995

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/ext/io/12_io.js b/ext/io/12_io.js
index d9b91a947..9f4a3766b 100644
--- a/ext/io/12_io.js
+++ b/ext/io/12_io.js
@@ -7,6 +7,7 @@
 import { core, primordials } from "ext:core/mod.js";
 const {
   op_stdin_set_raw,
+  op_is_terminal,
 } = core.ensureFastOps(true);
 const {
   Uint8Array,
@@ -197,6 +198,10 @@ class Stdin {
     const cbreak = !!(options.cbreak ?? false);
     op_stdin_set_raw(mode, cbreak);
   }
+
+  isTerminal() {
+    return op_is_terminal(this.rid);
+  }
 }
 
 class Stdout {
@@ -227,6 +232,10 @@ class Stdout {
     }
     return this.#writable;
   }
+
+  isTerminal() {
+    return op_is_terminal(this.rid);
+  }
 }
 
 class Stderr {
@@ -257,6 +266,10 @@ class Stderr {
     }
     return this.#writable;
   }
+
+  isTerminal() {
+    return op_is_terminal(this.rid);
+  }
 }
 
 const stdin = new Stdin();