fix(cli): use rid getter for stdio (#8014)

This changes the rid of Deno.stdin, Deno.stdout, Deno.stderr from a
mutable property into a getter to match the rid semantics of Deno.File.

1 files changed, 12 insertions, 3 deletions

diff --git a/cli/rt/30_files.js b/cli/rt/30_files.js
index e492da218..679b184fd 100644
--- a/cli/rt/30_files.js
+++ b/cli/rt/30_files.js
@@ -109,7 +109,10 @@
 
   class Stdin {
     constructor() {
-      this.rid = 0;
+    }
+
+    get rid() {
+      return 0;
     }
 
     read(p) {
@@ -127,7 +130,10 @@
 
   class Stdout {
     constructor() {
-      this.rid = 1;
+    }
+
+    get rid() {
+      return 1;
     }
 
     write(p) {
@@ -145,7 +151,10 @@
 
   class Stderr {
     constructor() {
-      this.rid = 2;
+    }
+
+    get rid() {
+      return 2;
     }
 
     write(p) {