add the bun:app module

src/bun.js/ModuleLoader.zig

@@ -2637,6 +2637,7 @@ pub const FetchFlags = enum {
 pub const HardcodedModule = enum {
     bun,
     @"abort-controller",
+    @"bun:app",
     @"bun:ffi",
     @"bun:jsc",
     @"bun:main",
@@ -2724,6 +2725,7 @@ pub const HardcodedModule = enum {
     pub const map = bun.ComptimeStringMap(HardcodedModule, [_]struct { []const u8, HardcodedModule }{
         // Bun
         .{ "bun", .bun },
+        .{ "bun:app", .@"bun:app" },
         .{ "bun:ffi", .@"bun:ffi" },
         .{ "bun:jsc", .@"bun:jsc" },
         .{ "bun:main", .@"bun:main" },
@@ -2991,6 +2993,7 @@ pub const HardcodedModule = enum {
         const bun_extra_alias_kvs = [_]struct { string, Alias }{
             .{ "bun", .{ .path = "bun", .tag = .bun } },
             .{ "bun:test", .{ .path = "bun:test", .tag = .bun_test } },
+            .{ "bun:app", .{ .path = "bun:app" } },
             .{ "bun:ffi", .{ .path = "bun:ffi" } },
             .{ "bun:jsc", .{ .path = "bun:jsc" } },
             .{ "bun:sqlite", .{ .path = "bun:sqlite" } },

src/bun.js/modules/BunAppModule.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "root.h"
+#include "_NativeModule.h"
+
+namespace Zig {
+using namespace WebCore;
+using namespace JSC;
+
+DEFINE_NATIVE_MODULE(BunApp)
+{
+    INIT_NATIVE_MODULE(0);
+    
+    // This is an empty module for now
+    // You can add exports here later using:
+    // put(JSC::Identifier::fromString(vm, "someFunction"_s), someValue);
+    
+    RETURN_NATIVE_MODULE();
+}
+
+} // namespace Zig

src/bun.js/modules/_NativeModule.h

@@ -27,6 +27,7 @@
 #define BUN_FOREACH_ESM_AND_CJS_NATIVE_MODULE(macro) \
     macro("bun:test"_s, BunTest) \
     macro("bun:jsc"_s, BunJSC) \
+    macro("bun:app"_s, BunApp) \
     macro("node:buffer"_s, NodeBuffer) \
     macro("node:constants"_s, NodeConstants) \
     macro("node:string_decoder"_s, NodeStringDecoder) \