5 files changed, 56 insertions, 7 deletions
diff --git a/cli/worker.rs b/cli/worker.rs
index 40c3cfcc3..be5a85cd6 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -813,7 +813,7 @@ fn create_web_worker_callback(
         node_ipc_fd: None,
         disable_deprecated_api_warning: shared.disable_deprecated_api_warning,
         verbose_deprecated_api_warning: shared.verbose_deprecated_api_warning,
-        future: false,
+        future: shared.enable_future_features,
       },
       extensions: vec![],
       startup_snapshot: crate::js::deno_isolate_init(),
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index cbba28434..c66732331 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -837,7 +837,7 @@ function bootstrapWorkerRuntime(
       6: argv0,
       7: shouldDisableDeprecatedApiWarning,
       8: shouldUseVerboseDeprecatedApiWarning,
-      9: _future,
+      9: future,
     } = runtimeOptions;
 
     deprecatedApiWarningDisabled = shouldDisableDeprecatedApiWarning;
@@ -937,6 +937,37 @@ function bootstrapWorkerRuntime(
         workerMetadata,
       );
     }
+
+    if (future) {
+      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.FsFile.prototype.rid;
+      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.resources;
+      delete Deno.seek;
+      delete Deno.seekSync;
+      delete Deno.shutdown;
+      delete Deno.writeAll;
+      delete Deno.writeAllSync;
+      delete Deno.write;
+      delete Deno.writeSync;
+    }
   } else {
     // Warmup
     return;
diff --git a/tests/specs/future/runtime_api/__test__.jsonc b/tests/specs/future/runtime_api/__test__.jsonc
index eb833195d..7aceff5bf 100644
--- a/tests/specs/future/runtime_api/__test__.jsonc
+++ b/tests/specs/future/runtime_api/__test__.jsonc
@@ -1,7 +1,18 @@
 {
-  "args": "run -A main.js",
-  "output": "main.out",
-  "envs": {
-    "DENO_FUTURE": "1"
-  }
+  "steps": [
+    {
+      "args": "run -A --unstable-fs main.js",
+      "output": "main.out",
+      "envs": {
+        "DENO_FUTURE": "1"
+      }
+    },
+    {
+      "args": "run -A --unstable-fs worker.js",
+      "output": "main.out",
+      "envs": {
+        "DENO_FUTURE": "1"
+      }
+    }
+  ]
 }
diff --git a/tests/specs/future/runtime_api/main.js b/tests/specs/future/runtime_api/main.js
index 5275ad878..ed60a7b7c 100644
--- a/tests/specs/future/runtime_api/main.js
+++ b/tests/specs/future/runtime_api/main.js
@@ -30,3 +30,5 @@ 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);
+
+self.close();
diff --git a/tests/specs/future/runtime_api/worker.js b/tests/specs/future/runtime_api/worker.js
new file mode 100644
index 000000000..64b8e07b8
--- /dev/null
+++ b/tests/specs/future/runtime_api/worker.js
@@ -0,0 +1,5 @@
+import { delay } from "../../../util/std/async/delay.ts";
+
+const worker = new Worker(import.meta.resolve("./main.js"), { type: "module" });
+await delay(1_000);
+worker.terminate();