From 4ecf54f10456e68e60a947cf3effa324c69a8c68 Mon Sep 17 00:00:00 2001
From: nikolapeevski <Jeratull@hotmail.com>
Date: Mon, 2 Aug 2021 23:55:51 +0300
Subject: [PATCH] fix: assets copying from 'nest build' is problematic

---
 lib/compiler/assets-manager.ts | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/lib/compiler/assets-manager.ts b/lib/compiler/assets-manager.ts
index 63b838ae3..51cd5f09b 100644
--- a/lib/compiler/assets-manager.ts
+++ b/lib/compiler/assets-manager.ts
@@ -13,13 +13,25 @@ import { getValueOrDefault } from './helpers/get-value-or-default';
 export class AssetsManager {
   private watchAssetsKeyValue: { [key: string]: boolean } = {};
   private watchers: chokidar.FSWatcher[] = [];
+  private actionInProgress = false;
 
   /**
    * Using on `nest build` to close file watch or the build process will not end
+   * Interval like process
+   * If no action has been taken recently close watchers
+   * If action has been taken recently flag and try again
    */
   public closeWatchers() {
-    const timeoutMs = 300;
-    const closeFn = () => this.watchers.forEach((watcher) => watcher.close());
+    // Consider adjusting this for larger files
+    const timeoutMs = 500;
+    const closeFn = () => {
+      if (this.actionInProgress) {
+        this.actionInProgress = false;
+        setTimeout(closeFn, timeoutMs);
+      } else {
+        this.watchers.forEach((watcher) => watcher.close());
+      }
+    };
 
     setTimeout(closeFn, timeoutMs);
   }
@@ -101,9 +113,10 @@ export class AssetsManager {
     if (!isWatchEnabled && this.watchAssetsKeyValue[path]) {
       return;
     }
-
     // Set path value to true for watching the first time
     this.watchAssetsKeyValue[path] = true;
+    // Set action to true to avoid watches getting cutoff
+    this.actionInProgress = true;
 
     const dest = copyPathResolve(
       path,