feat: added file upload and download support (#84)

* infer fetcher response type and support for blob

* fix: return type

Author: needim

plugins/typescript/src/core/findCompatibleMediaType.ts

@@ -18,7 +18,8 @@ export const findCompatibleMediaType = (
     if (
       contentType.startsWith("*/*") ||
       contentType.startsWith("application/json") ||
-      contentType.startsWith("application/octet-stream")
+      contentType.startsWith("application/octet-stream") ||
+      contentType.startsWith("multipart/form-data")
     ) {
       return requestBodyOrResponseObject.content[contentType];
     }

plugins/typescript/src/core/schemaToTypeAliasDeclaration.ts

@@ -165,6 +165,9 @@ export const getType = (
         schema.nullable
       );
     case "string":
+      if (schema.format === "binary") {
+        return f.createTypeReferenceNode("Blob");
+      }
       return withNullable(
         f.createKeywordTypeNode(ts.SyntaxKind.StringKeyword),
         schema.nullable

plugins/typescript/src/templates/fetcher.ts

@@ -98,7 +98,12 @@ export async function ${camel(prefix)}Fetch<
       throw error;
     }
 
-    return await response.json();
+    if (response.headers.get('content-type').includes('json')) {
+      return await response.json();
+    } else {
+      // if it is not a json response, asume it is a blob and cast it to TData
+      return (await response.blob()) as unknown as TData;
+    }
   } catch (e) {
     throw {
       status: "unknown" as const,