better handling of file watchers

src/Ation.js

@@ -28,7 +28,7 @@ class Ation {
 
 		app.whenReady().then(async () => {
 			if (this.fileToOpen)
-				this.openFile(this.fileToOpen, true);
+				this.openFile(this.fileToOpen);
 			protocol.registerFileProtocol("slideimg", (request, callback) => {
 				const uri       = request.url.replace(/^slideimg:\/\//, "");
 				const extension = path.extname(uri).replace(/^\./, "");
@@ -66,12 +66,17 @@ class Ation {
 
 				if (!change) 
 					this.currentFile = filePath;
-
-				this.watcher = fsn.watch(filePath, () => {
-					this.openFile(this.currentFile, true);
+				if (this.watcher)
+					this.watcher.close();
+				this.watcher = fsn.watch(filePath, (eventType, path) => {
+					if (path.match(/~$/)) // handling unix swap files here
+						setTimeout(() => this.openFile(this.currentFile, true), 1000);
+					else
+						this.openFile(this.currentFile, true);
 				});
 				this.windowManager.mainWindow.send("Ation::openFile", [basePath, data]);
-			} catch {
+			} catch (error) {
+				console.log(error);
 				return;
 			}
 	}