import errors have `code` set to `ERR_MODULE_NOT_FOUND` and `require` errors have `code` set to `MODULE_NOT_FOUND` (#4244)

* ResolveMessage

* Fix it

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

6 files changed, 91 insertions, 5 deletions

diff --git a/src/bun.js/ResolveMessage.zig b/src/bun.js/ResolveMessage.zig
index 457a8ec4f..cf2c5f496 100644
--- a/src/bun.js/ResolveMessage.zig
+++ b/src/bun.js/ResolveMessage.zig
@@ -26,6 +26,28 @@ pub const ResolveMessage = struct {
         return null;
     }
 
+    pub fn getCode(this: *ResolveMessage, globalObject: *JSC.JSGlobalObject) callconv(.C) JSC.JSValue {
+        switch (this.msg.metadata) {
+            .resolve => |resolve| {
+                const label: []const u8 = brk: {
+                    if (resolve.import_kind.isCommonJS()) {
+                        break :brk "MODULE_NOT_FOUND";
+                    }
+
+                    break :brk switch (resolve.import_kind) {
+                        .stmt, .dynamic => "ERR_MODULE_NOT_FOUND",
+                        else => "RESOLVE_ERROR",
+                    };
+                };
+
+                var atom = bun.String.createAtom(label);
+                defer atom.deref();
+                return atom.toJS(globalObject);
+            },
+            else => return .undefined,
+        }
+    }
+
     pub fn fmt(allocator: std.mem.Allocator, specifier: string, referrer: string, err: anyerror) !string {
         switch (err) {
             error.ModuleNotFound => {
diff --git a/src/bun.js/bindings/ZigGeneratedClasses.cpp b/src/bun.js/bindings/ZigGeneratedClasses.cpp
index 225fb5385..7106357b2 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses.cpp
+++ b/src/bun.js/bindings/ZigGeneratedClasses.cpp
@@ -17471,6 +17471,9 @@ extern "C" void ResolveMessageClass__finalize(void*);
 extern "C" EncodedJSValue ResolveMessagePrototype__toPrimitive(void* ptr, JSC::JSGlobalObject* lexicalGlobalObject, JSC::CallFrame* callFrame);
 JSC_DECLARE_HOST_FUNCTION(ResolveMessagePrototype__toPrimitiveCallback);
 
+extern "C" JSC::EncodedJSValue ResolveMessagePrototype__getCode(void* ptr, JSC::JSGlobalObject* lexicalGlobalObject);
+JSC_DECLARE_CUSTOM_GETTER(ResolveMessagePrototype__codeGetterWrap);
+
 extern "C" JSC::EncodedJSValue ResolveMessagePrototype__getImportKind(void* ptr, JSC::JSGlobalObject* lexicalGlobalObject);
 JSC_DECLARE_CUSTOM_GETTER(ResolveMessagePrototype__importKindGetterWrap);
 
@@ -17498,6 +17501,7 @@ JSC_DECLARE_HOST_FUNCTION(ResolveMessagePrototype__toStringCallback);
 STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(JSResolveMessagePrototype, JSResolveMessagePrototype::Base);
 
 static const HashTableValue JSResolveMessagePrototypeTableValues[] = {
+    { "code"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute | PropertyAttribute::DontDelete), NoIntrinsic, { HashTableValue::GetterSetterType, ResolveMessagePrototype__codeGetterWrap, 0 } },
     { "importKind"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute | PropertyAttribute::DontDelete), NoIntrinsic, { HashTableValue::GetterSetterType, ResolveMessagePrototype__importKindGetterWrap, 0 } },
     { "level"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute | PropertyAttribute::DontDelete), NoIntrinsic, { HashTableValue::GetterSetterType, ResolveMessagePrototype__levelGetterWrap, 0 } },
     { "message"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute | PropertyAttribute::DontDelete), NoIntrinsic, { HashTableValue::GetterSetterType, ResolveMessagePrototype__messageGetterWrap, 0 } },
@@ -17550,6 +17554,37 @@ JSC_DEFINE_HOST_FUNCTION(ResolveMessagePrototype__toPrimitiveCallback, (JSGlobal
     return ResolveMessagePrototype__toPrimitive(thisObject->wrapped(), lexicalGlobalObject, callFrame);
 }
 
+JSC_DEFINE_CUSTOM_GETTER(ResolveMessagePrototype__codeGetterWrap, (JSGlobalObject * lexicalGlobalObject, EncodedJSValue thisValue, PropertyName attributeName))
+{
+    auto& vm = lexicalGlobalObject->vm();
+    Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
+    auto throwScope = DECLARE_THROW_SCOPE(vm);
+    JSResolveMessage* thisObject = jsCast<JSResolveMessage*>(JSValue::decode(thisValue));
+    JSC::EnsureStillAliveScope thisArg = JSC::EnsureStillAliveScope(thisObject);
+
+    if (JSValue cachedValue = thisObject->m_code.get())
+        return JSValue::encode(cachedValue);
+
+    JSC::JSValue result = JSC::JSValue::decode(
+        ResolveMessagePrototype__getCode(thisObject->wrapped(), globalObject));
+    RETURN_IF_EXCEPTION(throwScope, {});
+    thisObject->m_code.set(vm, thisObject, result);
+    RELEASE_AND_RETURN(throwScope, JSValue::encode(result));
+}
+
+extern "C" void ResolveMessagePrototype__codeSetCachedValue(JSC::EncodedJSValue thisValue, JSC::JSGlobalObject* globalObject, JSC::EncodedJSValue value)
+{
+    auto& vm = globalObject->vm();
+    auto* thisObject = jsCast<JSResolveMessage*>(JSValue::decode(thisValue));
+    thisObject->m_code.set(vm, thisObject, JSValue::decode(value));
+}
+
+extern "C" EncodedJSValue ResolveMessagePrototype__codeGetCachedValue(JSC::EncodedJSValue thisValue)
+{
+    auto* thisObject = jsCast<JSResolveMessage*>(JSValue::decode(thisValue));
+    return JSValue::encode(thisObject->m_code.get());
+}
+
 JSC_DEFINE_CUSTOM_GETTER(ResolveMessagePrototype__importKindGetterWrap, (JSGlobalObject * lexicalGlobalObject, EncodedJSValue thisValue, PropertyName attributeName))
 {
     auto& vm = lexicalGlobalObject->vm();
@@ -17797,7 +17832,6 @@ void JSResolveMessagePrototype::finishCreation(JSC::VM& vm, JSC::JSGlobalObject*
     Base::finishCreation(vm);
     reifyStaticProperties(vm, JSResolveMessage::info(), JSResolveMessagePrototypeTableValues, *this);
     this->putDirect(vm, vm.propertyNames->toPrimitiveSymbol, JSFunction::create(vm, globalObject, 1, String("toPrimitive"_s), ResolveMessagePrototype__toPrimitiveCallback, ImplementationVisibility::Public), PropertyAttribute::Function | PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | 0);
-    this->putDirect(vm, Identifier::fromString(vm, "code"_s), jsString(vm, String("ERR_MODULE_NOT_FOUND"_s)), PropertyAttribute::ReadOnly | 0);
     this->putDirect(vm, vm.propertyNames->name, jsString(vm, String("ResolveMessage"_s)), PropertyAttribute::ReadOnly | 0);
     JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
 }
@@ -17953,6 +17987,7 @@ void JSResolveMessage::visitChildrenImpl(JSCell* cell, Visitor& visitor)
     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
     Base::visitChildren(thisObject, visitor);
 
+    visitor.append(thisObject->m_code);
     visitor.append(thisObject->m_importKind);
     visitor.append(thisObject->m_level);
     visitor.append(thisObject->m_message);
@@ -17969,6 +18004,7 @@ void JSResolveMessage::visitAdditionalChildren(Visitor& visitor)
     JSResolveMessage* thisObject = this;
     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
 
+    visitor.append(thisObject->m_code);
     visitor.append(thisObject->m_importKind);
     visitor.append(thisObject->m_level);
     visitor.append(thisObject->m_message);
diff --git a/src/bun.js/bindings/ZigGeneratedClasses.h b/src/bun.js/bindings/ZigGeneratedClasses.h
index 6ed7eb5de..b8b694068 100644
--- a/src/bun.js/bindings/ZigGeneratedClasses.h
+++ b/src/bun.js/bindings/ZigGeneratedClasses.h
@@ -1854,6 +1854,7 @@ public:
     template<typename Visitor> void visitAdditionalChildren(Visitor&);
     DECLARE_VISIT_OUTPUT_CONSTRAINTS;
 
+    mutable JSC::WriteBarrier<JSC::Unknown> m_code;
     mutable JSC::WriteBarrier<JSC::Unknown> m_importKind;
     mutable JSC::WriteBarrier<JSC::Unknown> m_level;
     mutable JSC::WriteBarrier<JSC::Unknown> m_message;
diff --git a/src/bun.js/bindings/generated_classes.zig b/src/bun.js/bindings/generated_classes.zig
index bf1942fd6..50e1a620b 100644
--- a/src/bun.js/bindings/generated_classes.zig
+++ b/src/bun.js/bindings/generated_classes.zig
@@ -4357,6 +4357,28 @@ pub const JSResolveMessage = struct {
         return ResolveMessage__fromJS(value);
     }
 
+    extern fn ResolveMessagePrototype__codeSetCachedValue(JSC.JSValue, *JSC.JSGlobalObject, JSC.JSValue) void;
+
+    extern fn ResolveMessagePrototype__codeGetCachedValue(JSC.JSValue) JSC.JSValue;
+
+    /// `ResolveMessage.code` setter
+    /// This value will be visited by the garbage collector.
+    pub fn codeSetCached(thisValue: JSC.JSValue, globalObject: *JSC.JSGlobalObject, value: JSC.JSValue) void {
+        JSC.markBinding(@src());
+        ResolveMessagePrototype__codeSetCachedValue(thisValue, globalObject, value);
+    }
+
+    /// `ResolveMessage.code` getter
+    /// This value will be visited by the garbage collector.
+    pub fn codeGetCached(thisValue: JSC.JSValue) ?JSC.JSValue {
+        JSC.markBinding(@src());
+        const result = ResolveMessagePrototype__codeGetCachedValue(thisValue);
+        if (result == .zero)
+            return null;
+
+        return result;
+    }
+
     extern fn ResolveMessagePrototype__importKindSetCachedValue(JSC.JSValue, *JSC.JSGlobalObject, JSC.JSValue) void;
 
     extern fn ResolveMessagePrototype__importKindGetCachedValue(JSC.JSValue) JSC.JSValue;
@@ -4538,6 +4560,9 @@ pub const JSResolveMessage = struct {
 
         if (@TypeOf(ResolveMessage.toPrimitive) != CallbackType)
             @compileLog("Expected ResolveMessage.toPrimitive to be a callback but received " ++ @typeName(@TypeOf(ResolveMessage.toPrimitive)));
+        if (@TypeOf(ResolveMessage.getCode) != GetterType)
+            @compileLog("Expected ResolveMessage.getCode to be a getter");
+
         if (@TypeOf(ResolveMessage.getImportKind) != GetterType)
             @compileLog("Expected ResolveMessage.getImportKind to be a getter");
 
@@ -4563,6 +4588,7 @@ pub const JSResolveMessage = struct {
         if (!JSC.is_bindgen) {
             @export(ResolveMessage.constructor, .{ .name = "ResolveMessageClass__construct" });
             @export(ResolveMessage.finalize, .{ .name = "ResolveMessageClass__finalize" });
+            @export(ResolveMessage.getCode, .{ .name = "ResolveMessagePrototype__getCode" });
             @export(ResolveMessage.getImportKind, .{ .name = "ResolveMessagePrototype__getImportKind" });
             @export(ResolveMessage.getLevel, .{ .name = "ResolveMessagePrototype__getLevel" });
             @export(ResolveMessage.getMessage, .{ .name = "ResolveMessagePrototype__getMessage" });
diff --git a/src/bun.js/javascript.zig b/src/bun.js/javascript.zig
index 07d3f64cf..a016129e2 100644
--- a/src/bun.js/javascript.zig
+++ b/src/bun.js/javascript.zig
@@ -1652,7 +1652,7 @@ pub const VirtualMachine = struct {
                     ),
                     .metadata = .{
                         // import_kind is wrong probably
-                        .resolve = .{ .specifier = logger.BabyString.in(printed, specifier_utf8.slice()), .import_kind = .stmt },
+                        .resolve = .{ .specifier = logger.BabyString.in(printed, specifier_utf8.slice()), .import_kind = if (is_esm) .stmt else .require },
                     },
                 };
             };
diff --git a/src/bun.js/resolve_message.classes.ts b/src/bun.js/resolve_message.classes.ts
index 734e766ba..3e3c6d083 100644
--- a/src/bun.js/resolve_message.classes.ts
+++ b/src/bun.js/resolve_message.classes.ts
@@ -13,6 +13,10 @@ export default [
         getter: "getMessage",
         cache: true,
       },
+      code: {
+        getter: "getCode",
+        cache: true,
+      },
       name: {
         value: "ResolveMessage",
       },
@@ -32,9 +36,6 @@ export default [
         getter: "getImportKind",
         cache: true,
       },
-      code: {
-        value: "ERR_MODULE_NOT_FOUND",
-      },
       position: {
         getter: "getPosition",
         cache: true,