feat: allow override for mock handlers to be a function (#1375)

* feat: allow override for mock handlers to be a function

* fix: has -> is

---------

Co-authored-by: Alfred Jonsson <alfred.jonsson@decerno.se>

packages/mock/src/msw/index.ts

@@ -95,19 +95,23 @@ const generateDefinition = (
     : '';
 
   const delay = getDelay(override, !isFunction(mock) ? mock : undefined);
+  const isHandlerOverridden = isReturnHttpResponse && !isTextPlain;
+  const infoParam = isHandlerOverridden ? 'info' : '';
   const handlerImplementation = `
-export const ${handlerName} = (${isReturnHttpResponse && !isTextPlain ? `overrideResponse?: ${returnType}` : ''}) => {
+export const ${handlerName} = (${isHandlerOverridden ? `overrideResponse?: ${returnType} | ((${infoParam}: Parameters<Parameters<typeof http.${verb}>[1]>[0]) => ${returnType})` : ''}) => {
   return http.${verb}('${route}', ${
     delay === false
-      ? '() => {'
-      : `async () => {
+      ? `(${infoParam}) => {`
+      : `async (${infoParam}) => {
     await delay(${isFunction(delay) ? `(${delay})()` : delay});`
   }
     return new HttpResponse(${
       isReturnHttpResponse
         ? isTextPlain
           ? `${getResponseMockFunctionName}()`
-          : `JSON.stringify(overrideResponse !== undefined ? overrideResponse : ${getResponseMockFunctionName}())`
+          : `JSON.stringify(overrideResponse !== undefined 
+            ? (typeof overrideResponse === "function" ? overrideResponse(${infoParam}) : overrideResponse) 
+            : ${getResponseMockFunctionName}())`
         : null
     },
       {