feat: remove deprecated methods from namespace with `DENO_FUTURE=1` (#23075)

This change removes deprecated methods from the `Deno.*` namespace when
the `DENO_FUTURE=1` environment variable is used.

Note: this does not address deprecated class properties and methods.
E.g. `Deno.Conn.rid`.

3 files changed, 79 insertions, 0 deletions

diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 3db781148..a6b522679 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -1,3 +1,4 @@
+// deno-lint-ignore-file no-deprecated-deno-api
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
 // Remove Intl.v8BreakIterator because it is a non-standard API.
@@ -779,6 +780,32 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
     }
     if (future) {
       delete globalThis.window;
+      delete Deno.Buffer;
+      delete Deno.close;
+      delete Deno.copy;
+      delete Deno.File;
+      delete Deno.fstat;
+      delete Deno.fstatSync;
+      delete Deno.ftruncate;
+      delete Deno.ftruncateSync;
+      delete Deno.flock;
+      delete Deno.flockSync;
+      delete Deno.funlock;
+      delete Deno.funlockSync;
+      delete Deno.iter;
+      delete Deno.iterSync;
+      delete Deno.metrics;
+      delete Deno.readAll;
+      delete Deno.readAllSync;
+      delete Deno.read;
+      delete Deno.readSync;
+      delete Deno.seek;
+      delete Deno.seekSync;
+      delete Deno.shutdown;
+      delete Deno.writeAll;
+      delete Deno.writeAllSync;
+      delete Deno.write;
+      delete Deno.writeSync;
     }
   } else {
     // Warmup
diff --git a/tests/specs/future/runtime_api/main.js b/tests/specs/future/runtime_api/main.js
index c310467d3..90f7829ea 100644
--- a/tests/specs/future/runtime_api/main.js
+++ b/tests/specs/future/runtime_api/main.js
@@ -1 +1,27 @@
 console.log("window is", globalThis.window);
+console.log("Deno.Buffer is", Deno.Buffer);
+console.log("Deno.close is", Deno.close);
+console.log("Deno.copy is", Deno.copy);
+console.log("Deno.File is", Deno.File);
+console.log("Deno.fstat is", Deno.fstat);
+console.log("Deno.fstatSync is", Deno.fstatSync);
+console.log("Deno.ftruncate is", Deno.ftruncate);
+console.log("Deno.ftruncateSync is", Deno.ftruncateSync);
+console.log("Deno.flock is", Deno.flock);
+console.log("Deno.flockSync is", Deno.flockSync);
+console.log("Deno.funlock is", Deno.funlock);
+console.log("Deno.funlockSync is", Deno.funlockSync);
+console.log("Deno.iter is", Deno.iter);
+console.log("Deno.iterSync is", Deno.iterSync);
+console.log("Deno.metrics is", Deno.metrics);
+console.log("Deno.readAll is", Deno.readAll);
+console.log("Deno.readAllSync is", Deno.readAllSync);
+console.log("Deno.read is", Deno.read);
+console.log("Deno.readSync is", Deno.readSync);
+console.log("Deno.seek is", Deno.seek);
+console.log("Deno.seekSync is", Deno.seekSync);
+console.log("Deno.shutdown is", Deno.shutdown);
+console.log("Deno.writeAll is", Deno.writeAll);
+console.log("Deno.writeAllSync is", Deno.writeAllSync);
+console.log("Deno.write is", Deno.write);
+console.log("Deno.writeSync is", Deno.writeSync);
diff --git a/tests/specs/future/runtime_api/main.out b/tests/specs/future/runtime_api/main.out
index 50818f11c..e23883e9b 100644
--- a/tests/specs/future/runtime_api/main.out
+++ b/tests/specs/future/runtime_api/main.out
@@ -1 +1,27 @@
 window is undefined
+Deno.Buffer is undefined
+Deno.close is undefined
+Deno.copy is undefined
+Deno.File is undefined
+Deno.fstat is undefined
+Deno.fstatSync is undefined
+Deno.ftruncate is undefined
+Deno.ftruncateSync is undefined
+Deno.flock is undefined
+Deno.flockSync is undefined
+Deno.funlock is undefined
+Deno.funlockSync is undefined
+Deno.iter is undefined
+Deno.iterSync is undefined
+Deno.metrics is undefined
+Deno.readAll is undefined
+Deno.readAllSync is undefined
+Deno.read is undefined
+Deno.readSync is undefined
+Deno.seek is undefined
+Deno.seekSync is undefined
+Deno.shutdown is undefined
+Deno.writeAll is undefined
+Deno.writeAllSync is undefined
+Deno.write is undefined
+Deno.writeSync is undefined