fix(transducers): add missing type annotation

thi-ng · Sep 21, 2018 · 022101f · 022101f
1 parent 78b1f4a
commit 022101f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/transducers/src/rfn/group-binary.ts b/packages/transducers/src/rfn/group-binary.ts
@@ -85,7 +85,7 @@ export function groupBinary<T>(
     branch?: () => IObjectOf<T[]>,
     leaf?: Reducer<any, T>,
     left: PropertyKey = "l",
-    right: PropertyKey = "r") {
+    right: PropertyKey = "r"): Reducer<any, T> {
 
     const init = branch || (() => ({}));
     let rfn: Reducer<any, T> = groupByObj({