diff --git a/src/bake/bake.zig b/src/bake/bake.zig
index cd621eb3de4..fa51c949a08 100644
--- a/src/bake/bake.zig
+++ b/src/bake/bake.zig
@@ -68,6 +68,9 @@ pub const UserOptions = struct {
         }
 
         if (try config.getOptional(global, "bundlerOptions", JSValue)) |js_options| {
+            if (!js_options.isObject()) {
+                return global.throwInvalidArguments("'" ++ api_name ++ ".bundlerOptions' must be an object", .{});
+            }
             if (try js_options.getOptional(global, "server", JSValue)) |server_options| {
                 bundler_options.server = try BuildConfigSubset.fromJS(global, server_options);
             }
@@ -205,6 +208,10 @@ const BuildConfigSubset = struct {
     pub fn fromJS(global: *jsc.JSGlobalObject, js_options: JSValue) bun.JSError!BuildConfigSubset {
         var options = BuildConfigSubset{};
 
+        if (!js_options.isObject()) {
+            return global.throwInvalidArguments("'" ++ api_name ++ ".bundlerOptions' values must be objects", .{});
+        }
+
         if (try js_options.getOptional(global, "sourcemap", JSValue)) |val| brk: {
             if (try bun.schema.api.SourceMapMode.fromJS(global, val)) |sourcemap| {
                 options.source_map = sourcemap;
@@ -215,13 +222,18 @@ const BuildConfigSubset = struct {
         }
 
         if (try js_options.getOptional(global, "minify", JSValue)) |minify_options| brk: {
-            if (minify_options.isBoolean() and minify_options.asBoolean()) {
-                options.minify_syntax = minify_options.asBoolean();
-                options.minify_identifiers = minify_options.asBoolean();
-                options.minify_whitespace = minify_options.asBoolean();
+            if (minify_options.isBoolean()) {
+                const b = minify_options.asBoolean();
+                options.minify_syntax = b;
+                options.minify_identifiers = b;
+                options.minify_whitespace = b;
                 break :brk;
             }
 
+            if (!minify_options.isObject()) {
+                return global.throwInvalidArguments("Expected 'minify' to be a boolean or an object", .{});
+            }
+
             if (try minify_options.getBooleanLoose(global, "whitespace")) |value| {
                 options.minify_whitespace = value;
             }
diff --git a/test/js/bun/http/bun-serve-args.test.ts b/test/js/bun/http/bun-serve-args.test.ts
index 54a44c192d3..fd6491844fe 100644
--- a/test/js/bun/http/bun-serve-args.test.ts
+++ b/test/js/bun/http/bun-serve-args.test.ts
@@ -670,3 +670,33 @@ describe("Bun.serve unix socket validation", () => {
     }
   });
 });
+
+describe("app", () => {
+  test("non-object bundlerOptions throws", () => {
+    expect(() => {
+      // @ts-expect-error
+      serve({ port: 0, app: { bundlerOptions: 315 } });
+    }).toThrow(TypeError);
+  });
+
+  test.each(["server", "client", "ssr"])("non-object bundlerOptions.%s throws", key => {
+    expect(() => {
+      // @ts-expect-error
+      serve({ port: 0, app: { bundlerOptions: { [key]: 5 } } });
+    }).toThrow(TypeError);
+  });
+
+  test("non-object bundlerOptions.server.minify throws", () => {
+    expect(() => {
+      // @ts-expect-error
+      serve({ port: 0, app: { bundlerOptions: { server: { minify: 5 } } } });
+    }).toThrow(TypeError);
+  });
+
+  test("bundlerOptions.server.minify: false does not crash", () => {
+    expect(() => {
+      // @ts-expect-error
+      serve({ port: 0, app: { bundlerOptions: { server: { minify: false } } } });
+    }).toThrow("'app' is missing 'framework'");
+  });
+});