Merge pull request #6988 from Dashlane/debounce

Debounce module

debounce/debounce-tests.ts

@@ -0,0 +1,14 @@
+/// <reference path="debounce.d.ts" />
+
+import debounce from "debounce";
+
+const doThings = () => 1;
+
+debounce(function(){ doThings(); })();
+
+debounce(function(){ doThings(); }, 1000)();
+
+debounce(function(a: string){ doThings(); }, 1000)("foo");
+
+// Immediate true should return the value
+const imm1: number = (debounce((x: number) => x * 2, 100, true))(2);

debounce/debounce.d.ts

@@ -0,0 +1,11 @@
+// Type definitions for compose-function
+// Project: https://github.com/component/debounce
+// Definitions by: Denis Sokolov <https://github.com/denis-sokolov>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module "debounce" {
+	// Overload on boolean constants would allow us to narrow further,
+	// but it is not implemented for TypeScript yet
+	function f<A extends Function>(f: A, interval?: number, immediate?: boolean): A
+	export default f;
+}