feat: Add postWithTimeout to FetchUtils (#1373)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nicholaspai

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@across-protocol/sdk",
   "author": "UMA Team",
-  "version": "4.3.137",
+  "version": "4.3.138",
   "license": "AGPL-3.0",
   "homepage": "https://docs.across.to/reference/sdk",
   "repository": {

src/utils/FetchUtils.ts

@@ -5,7 +5,7 @@ const toStringRecord = (headers: FetchHeaders): Record<string, string> => {
   const normalizedHeaders: Record<string, string> = {};
   for (const [key, value] of Object.entries(headers)) {
     if (value !== undefined && value !== null) {
-      normalizedHeaders[key] = String(value);
+      normalizedHeaders[key.toLowerCase()] = String(value);
     }
   }
   return normalizedHeaders;
@@ -24,15 +24,19 @@ const applyQueryParams = (url: string, params: FetchQueryParams): string => {
   return parsedUrl.toString();
 };
 
-export async function fetchWithTimeout<T = unknown>(
+async function baseFetch<T = unknown>(
   url: string,
-  params: FetchQueryParams = {},
-  headers: FetchHeaders = {},
+  method: string,
+  body: string | undefined,
+  params: FetchQueryParams,
+  headers: FetchHeaders,
   timeout?: number,
   responseType: "json" | "text" = "json"
 ): Promise<T> {
   const fullUrl = applyQueryParams(url, params);
   const response = await fetch(fullUrl, {
+    method,
+    body,
     headers: toStringRecord(headers),
     ...(timeout && timeout > 0 && { signal: AbortSignal.timeout(timeout) }),
   });
@@ -64,3 +68,32 @@ export async function fetchWithTimeout<T = unknown>(
     );
   }
 }
+
+export function fetchWithTimeout<T = unknown>(
+  url: string,
+  params: FetchQueryParams = {},
+  headers: FetchHeaders = {},
+  timeout?: number,
+  responseType: "json" | "text" = "json"
+): Promise<T> {
+  return baseFetch<T>(url, "GET", undefined, params, headers, timeout, responseType);
+}
+
+export function postWithTimeout<T = unknown>(
+  url: string,
+  body: unknown,
+  params: FetchQueryParams = {},
+  headers: FetchHeaders = {},
+  timeout?: number,
+  responseType: "json" | "text" = "json"
+): Promise<T> {
+  return baseFetch<T>(
+    url,
+    "POST",
+    JSON.stringify(body),
+    params,
+    { "Content-Type": "application/json", ...headers },
+    timeout,
+    responseType
+  );
+}

yarn.lock

@@ -5984,7 +5984,7 @@ fn.name@1.x.x:
   resolved "https://registry.yarnpkg.com/fn.name/-/fn.name-1.1.0.tgz#26cad8017967aea8731bc42961d04a3d5988accc"
   integrity sha512-GRnmB5gPyJpAhTQdSZTSp9uaPSvl09KoYcMQtsB9rQoOmzs9dH6ffeccH+Z+cv6P68Hu5bC6JjRh4Ah/mHSNRw==
 
-follow-redirects@^1.12.1, follow-redirects@^1.14.0, follow-redirects@^1.15.4, follow-redirects@^1.15.6:
+follow-redirects@^1.12.1, follow-redirects@^1.14.0, follow-redirects@^1.15.4:
   version "1.15.9"
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.15.9.tgz#a604fa10e443bf98ca94228d9eebcc2e8a2c8ee1"
   integrity sha512-gew4GsXizNgdoRyqmyfMHyAmXsZDk6mHkSxZFCzW9gwlbtOW44CDtYavM+y+72qD/Vq2l550kMF52DT8fOLJqQ==