search on input

src/lib/util.js

@@ -0,0 +1,36 @@
+
+const now = Date.now || function() {
+    return new Date().getTime();
+};
+
+export function debounce(func, wait, immediate) {
+    var timeout, args, context, timestamp, result;
+
+    var later = function() {
+        var last = now() - timestamp;
+
+        if (last < wait && last >= 0) {
+            timeout = setTimeout(later, wait - last);
+        } else {
+            timeout = null;
+            if (!immediate) {
+                result = func.apply(context, args);
+                if (!timeout) context = args = null;
+            }
+        }
+    };
+
+    return function() {
+        context = this;
+        args = arguments;
+        timestamp = now();
+        var callNow = immediate && !timeout;
+        if (!timeout) timeout = setTimeout(later, wait);
+        if (callNow) {
+            result = func.apply(context, args);
+            context = args = null;
+        }
+
+        return result;
+    };
+}