1 files changed, 10 insertions, 2 deletions
diff --git a/packages/sdk/js/src/gen/client/utils.gen.ts b/packages/sdk/js/src/gen/client/utils.gen.ts
index 209bfbe8e..71d52f776 100644
--- a/packages/sdk/js/src/gen/client/utils.gen.ts
+++ b/packages/sdk/js/src/gen/client/utils.gen.ts
@@ -162,14 +162,22 @@ export const mergeConfigs = (a: Config, b: Config): Config => {
   return config
 }
 
+const headersEntries = (headers: Headers): Array<[string, string]> => {
+  const entries: Array<[string, string]> = []
+  headers.forEach((value, key) => {
+    entries.push([key, value])
+  })
+  return entries
+}
+
 export const mergeHeaders = (...headers: Array<Required<Config>["headers"] | undefined>): Headers => {
   const mergedHeaders = new Headers()
   for (const header of headers) {
-    if (!header || typeof header !== "object") {
+    if (!header) {
       continue
     }
 
-    const iterator = header instanceof Headers ? header.entries() : Object.entries(header)
+    const iterator = header instanceof Headers ? headersEntries(header) : Object.entries(header)
 
     for (const [key, value] of iterator) {
       if (value === null) {