diff --git a/cli/emit.rs b/cli/emit.rs
index 7a7b227074c753..1722cd88124584 100644
--- a/cli/emit.rs
+++ b/cli/emit.rs
@@ -197,6 +197,9 @@ pub fn get_ts_config(
   } else {
     ts_config.merge_tsconfig_from_config_file(maybe_config_file)?
   };
+  ts_config.merge(&json!({
+    "moduleDetection": "force",
+  }));
   Ok((ts_config, maybe_ignored_options))
 }
 
diff --git a/cli/lsp/language_server.rs b/cli/lsp/language_server.rs
index d1afc9b410a726..fdda1aeecd85f6 100644
--- a/cli/lsp/language_server.rs
+++ b/cli/lsp/language_server.rs
@@ -649,6 +649,7 @@ impl Inner {
       "jsx": "react",
       "lib": ["deno.ns", "deno.window"],
       "module": "esnext",
+      "moduleDetection": "force",
       "noEmit": true,
       "resolveJsonModule": true,
       "strict": true,
diff --git a/cli/tests/integration/check_tests.rs b/cli/tests/integration/check_tests.rs
index f605a733a3cac2..dca41a1e45af8f 100644
--- a/cli/tests/integration/check_tests.rs
+++ b/cli/tests/integration/check_tests.rs
@@ -32,3 +32,8 @@ itest!(check_all_local {
   output_str: Some(""),
   http_server: true,
 });
+
+itest!(module_detection_force {
+  args: "check --quiet module_detection_force.ts",
+  output_str: Some(""),
+});
diff --git a/cli/tests/testdata/046_jsx_test.tsx b/cli/tests/testdata/046_jsx_test.tsx
index a96e90bafd69e8..5ed3ff2fabe715 100644
--- a/cli/tests/testdata/046_jsx_test.tsx
+++ b/cli/tests/testdata/046_jsx_test.tsx
@@ -1,6 +1,8 @@
-declare namespace JSX {
-  interface IntrinsicElements {
-    [elemName: string]: any;
+declare global {
+  export namespace JSX {
+    interface IntrinsicElements {
+      [elemName: string]: any;
+    }
   }
 }
 const React = {
diff --git a/cli/tests/testdata/error_for_await.ts b/cli/tests/testdata/error_for_await.ts
index 6e8c5203f4532a..64c81abe4f46f3 100644
--- a/cli/tests/testdata/error_for_await.ts
+++ b/cli/tests/testdata/error_for_await.ts
@@ -10,5 +10,3 @@ function handleConn(conn: Deno.Conn) {
     event.respondWith(new Response("html", { status: 200 }));
   }
 }
-
-export {};
diff --git a/cli/tests/testdata/lsp/code_action_response_no_disabled.json b/cli/tests/testdata/lsp/code_action_response_no_disabled.json
index c69bd1120fb2c3..11d2136b5e3030 100644
--- a/cli/tests/testdata/lsp/code_action_response_no_disabled.json
+++ b/cli/tests/testdata/lsp/code_action_response_no_disabled.json
@@ -1,4 +1,24 @@
 [
+  {
+    "title": "Extract to function in module scope",
+    "kind": "refactor.extract.function",
+    "isPreferred": false,
+    "data": {
+      "specifier": "file:///a/file.ts",
+      "range": {
+        "start": {
+          "line": 0,
+          "character": 0
+        },
+        "end": {
+          "line": 14,
+          "character": 0
+        }
+      },
+      "refactorName": "Extract Symbol",
+      "actionName": "function_scope_0"
+    }
+  },
   {
     "title": "Move to a new file",
     "kind": "refactor.move.newFile",
diff --git a/cli/tests/testdata/lsp/code_action_response_refactor.json b/cli/tests/testdata/lsp/code_action_response_refactor.json
index c2797812e9cbb9..d0d9fb0ee2e36d 100644
--- a/cli/tests/testdata/lsp/code_action_response_refactor.json
+++ b/cli/tests/testdata/lsp/code_action_response_refactor.json
@@ -1,6 +1,6 @@
 [
   {
-    "title": "Extract to function in global scope",
+    "title": "Extract to function in module scope",
     "kind": "refactor.extract.function",
     "isPreferred": false,
     "data": {
diff --git a/cli/tests/testdata/module_detection_force.ts b/cli/tests/testdata/module_detection_force.ts
new file mode 100644
index 00000000000000..7729ae366c3fbf
--- /dev/null
+++ b/cli/tests/testdata/module_detection_force.ts
@@ -0,0 +1,3 @@
+const a = 1;
+await import("./module_detection_force_import.ts");
+console.log(a);
diff --git a/cli/tests/testdata/module_detection_force_import.ts b/cli/tests/testdata/module_detection_force_import.ts
new file mode 100644
index 00000000000000..66b229870debb7
--- /dev/null
+++ b/cli/tests/testdata/module_detection_force_import.ts
@@ -0,0 +1,2 @@
+const a = 2;
+console.log(a);
diff --git a/cli/tests/testdata/subdir/polyfill.ts b/cli/tests/testdata/subdir/polyfill.ts
index e1cd923cbc4611..7af67c4c0320b3 100644
--- a/cli/tests/testdata/subdir/polyfill.ts
+++ b/cli/tests/testdata/subdir/polyfill.ts
@@ -2,8 +2,6 @@ declare global {
   const polyfill: () => void;
 }
 
-export {};
-
 // deno-lint-ignore no-explicit-any
 (globalThis as any).polyfill = () => {
   console.log("polyfill");
diff --git a/cli/tests/testdata/subdir/single_module.ts b/cli/tests/testdata/subdir/single_module.ts
index f41b0a4b545ed4..940a3ff0ec2025 100644
--- a/cli/tests/testdata/subdir/single_module.ts
+++ b/cli/tests/testdata/subdir/single_module.ts
@@ -1,2 +1 @@
 console.log("Hello world!");
-export {}; // TODO(ry) This shouldn't be necessary.
diff --git a/cli/tests/testdata/subdir/subdir2/dynamic_import.ts b/cli/tests/testdata/subdir/subdir2/dynamic_import.ts
index 573887b7118da8..59beb64c33a153 100644
--- a/cli/tests/testdata/subdir/subdir2/dynamic_import.ts
+++ b/cli/tests/testdata/subdir/subdir2/dynamic_import.ts
@@ -2,5 +2,3 @@
   const { printHello } = await import("../mod2.ts");
   printHello();
 })();
-
-export {};
diff --git a/cli/tests/testdata/worker_message_before_close.js b/cli/tests/testdata/worker_message_before_close.js
index 13ca6c9c7449f3..a8f5d09d510049 100644
--- a/cli/tests/testdata/worker_message_before_close.js
+++ b/cli/tests/testdata/worker_message_before_close.js
@@ -24,5 +24,3 @@ globalThis.addEventListener("unload", () => {
     );
   }
 });
-
-export {};
diff --git a/cli/tools/test.rs b/cli/tools/test.rs
index 6d1530f3e7dba0..ef4d35cce39f73 100644
--- a/cli/tools/test.rs
+++ b/cli/tools/test.rs
@@ -884,8 +884,6 @@ fn extract_files_from_regex_blocks(
         file_source.push_str(&format!("{}\n", text.as_str()));
       }
 
-      file_source.push_str("export {};");
-
       let file_specifier = deno_core::resolve_url_or_path(&format!(
         "{}${}-{}{}",
         specifier,
diff --git a/cli/tsc/99_main_compiler.js b/cli/tsc/99_main_compiler.js
index c8dc56d5b9c091..527a4964fcaf57 100644
--- a/cli/tsc/99_main_compiler.js
+++ b/cli/tsc/99_main_compiler.js
@@ -83,10 +83,10 @@ delete Object.prototype.__proto__;
 
   // deno-fmt-ignore
   const base64abc = [
-    "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", 
-    "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", 
-    "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", 
-    "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7", 
+    "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O",
+    "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d",
+    "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",
+    "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7",
     "8", "9", "+", "/",
   ];
 
@@ -188,17 +188,6 @@ delete Object.prototype.__proto__;
   /** Diagnostics that are intentionally ignored when compiling TypeScript in
    * Deno, as they provide misleading or incorrect information. */
   const IGNORED_DIAGNOSTICS = [
-    // TS1208: All files must be modules when the '--isolatedModules' flag is
-    // provided.  We can ignore because we guarantee that all files are
-    // modules.
-    1208,
-    // TS1375: 'await' expressions are only allowed at the top level of a file
-    // when that file is a module, but this file has no imports or exports.
-    // Consider adding an empty 'export {}' to make this file a module.
-    1375,
-    // TS2306: File 'file:///Users/rld/src/deno/cli/tests/testdata/subdir/amd_like.js' is
-    // not a module.
-    2306,
     // TS2688: Cannot find type definition file for '...'.
     // We ignore because type defintion files can end with '.ts'.
     2688,