feat: Add warnings for more deprecated APIs (#21992)

Follow up to https://github.com/denoland/deno/pull/21939 that adds
deprecation warnings to more `Deno` APIs:

- `Deno.copy()`
- `Deno.iter()`
- `Deno.iterSync()`
- `new Deno.Buffer()`
- `Deno.readAll()`
- `Deno.readAllSync()`
- `Deno.writeAll()`
- `Deno.writeAllSync()`
- `Deno.FsWatcher.return`
- `Deno.serveHttp()`
- `Deno.metrics()`

---------

Signed-off-by: Asher Gomez <ashersaupingomez@gmail.com>
Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/runtime/js/90_deno_ns.js b/runtime/js/90_deno_ns.js
index 5bcc68a57..bba1f30d7 100644
--- a/runtime/js/90_deno_ns.js
+++ b/runtime/js/90_deno_ns.js
@@ -43,7 +43,10 @@ class FsFile extends fs.FsFile {
 }
 
 const denoNs = {
-  metrics: core.metrics,
+  metrics: () => {
+    internals.warnOnDeprecatedApi("Deno.metrics()", new Error().stack);
+    return core.metrics();
+  },
   Process: process.Process,
   run: process.run,
   isatty: tty.isatty,