From 877e3fb0dbdaf06cf3a9b4fb0fa731df2093901c Mon Sep 17 00:00:00 2001
From: Joy Zhong <joyzhong@google.com>
Date: Thu, 26 Aug 2021 08:30:57 -0700
Subject: [PATCH] fix(slider): Reorder such that dragstart event is emitted
 before any other events when handling drag start.

PiperOrigin-RevId: 393130257
---
 packages/mdc-slider/foundation.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/mdc-slider/foundation.ts b/packages/mdc-slider/foundation.ts
index 2c1bec36f47..f00bc3f3bc1 100644
--- a/packages/mdc-slider/foundation.ts
+++ b/packages/mdc-slider/foundation.ts
@@ -568,11 +568,11 @@ export class MDCSliderFoundation extends MDCFoundation<MDCSliderAdapter> {
    */
   private handleDragStart(
       event: PointerEvent|MouseEvent|TouchEvent, value: number, thumb: Thumb) {
+    this.adapter.emitDragStartEvent(value, thumb);
+
     this.adapter.focusInput(thumb);
     // Prevent the input (that we just focused) from losing focus.
     event.preventDefault();
-
-    this.adapter.emitDragStartEvent(value, thumb);
   }
 
   /**