fix: ErrorFactory.reject() will trigger unhandled rejection event

src/codegen/generate-node-errors.ts

@@ -1,7 +1,9 @@
 import path from "node:path";
 import NodeErrors from "../bun.js/bindings/ErrorCode.ts";
-const outputDir = process.argv[2];
 
+const generatorName = "src/codegen/" + import.meta.file;
+
+const outputDir = process.argv[2];
 if (!outputDir) {
   throw new Error("Missing output directory");
 }
@@ -24,7 +26,7 @@ let zig = ``;
 
 enumHeader = `
 // clang-format off
-// Generated by: src/codegen/generate-node-errors.ts
+// Generated by: ${generatorName}
 // Input:        src/bun.js/bindings/ErrorCode.ts
 #pragma once
 
@@ -37,7 +39,7 @@ namespace Bun {
 
 listHeader = `
 // clang-format off
-// Generated by: src/codegen/generate-node-errors.ts
+// Generated by: ${generatorName}
 #pragma once
 
 #include <JavaScriptCore/ErrorType.h>
@@ -51,7 +53,7 @@ static constexpr ErrorCodeData errors[${count}] = {
 `;
 
 zig = `
-// Generated by: src/codegen/generate-node-errors.ts
+// Generated by: ${generatorName}
 const std = @import("std");
 const bun = @import("root").bun;
 const JSC = bun.JSC;
@@ -73,7 +75,11 @@ pub fn ErrorBuilder(comptime code: Error, comptime fmt: [:0]const u8, Args: type
 
       /// Turn this into a JSPromise that is already rejected.
       pub inline fn reject(this: @This()) JSC.JSValue {
-        return JSC.JSPromise.rejectedPromiseValue(this.globalThis, code.fmt(this.globalThis, fmt, this.args));
+        if (comptime bun.FeatureFlags.breaking_changes_1_3) {
+          return JSC.JSPromise.rejectedPromise(this.globalThis, code.fmt(this.globalThis, fmt, this.args)).toJS();
+        } else {
+          return JSC.JSPromise.rejectedPromiseValue(this.globalThis, code.fmt(this.globalThis, fmt, this.args));
+        }
       }
   };
 }