fix: improve type inference

README.md

@@ -1,8 +1,10 @@
 # throttle-ts
 
-Correctly typed, generic, typescript throttle function
+Correctly typed, generic, typescript throttle function.
 
-Yields the return value of the throttled function.
+Yields the return value of the throttled function, or undefined when throttled/cancelled.
+
+The throttled function keeps the type signature of the original function, plus `void`.
 
 Returns a cancel function which enables cleanup of the timeout, and blocks future calls to the throttled function. Useful when unmounting react/view components.
 

src/index.ts

@@ -1,13 +1,13 @@
 export const throttle = <T extends (...args: any) => any>(
   fn: T,
   delay: number
-): [T | ((...args: any) => void), () => void] => {
+): [T | (() => void), () => void] => {
   let wait = false;
   let timeout: undefined | number;
   let cancelled = false;
 
   return [
-    (...args) => {
+    (...args: any[]) => {
       if (cancelled) return undefined;
       if (wait) return undefined;