From 50468edd4c82dd16cc74312f71c0792c9420ef9d Mon Sep 17 00:00:00 2001
From: James Yang <26634873@qq.com>
Date: Sun, 20 Jun 2021 11:17:21 +0800
Subject: [PATCH] feat: add mtime compare for path change

I found it's better to compare `mtime` for stat and lastStat in `_enqueue`, if it's same, then skip.
---
 src/CheapWatch.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/CheapWatch.ts b/src/CheapWatch.ts
index a61f3fa..6a6efb2 100644
--- a/src/CheapWatch.ts
+++ b/src/CheapWatch.ts
@@ -126,6 +126,12 @@ export default class CheapWatch extends EventEmitter {
 					continue;
 				}
 				const isNew = !this.paths.has(path);
+				if (!isNew) {
+				  const lastStat = this.paths.get(path)
+				  if (String(lastStat.mtime) === String(stats.mtime)) {
+				    continue
+				  }
+				}
 				this.paths.set(path, stats);
 				if (path) {
 					this.emit('+', { path, stats, isNew });