Fix disconnect (#68)

README.md

@@ -11,6 +11,7 @@ This project is used by the [ESP Web Tools](https://github.com/esphome/esp-web-t
 - Clone this repository.
 - Install dependencies with `npm`
 - Run `script/develop`
+- Open http://localhost:5004/
 
 ## Fork
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "esp-web-flasher",
-  "version": "3.2.0",
+  "version": "4.0.0",
   "description": "Flash ESP devices using WebSerial",
   "main": "dist/index.js",
   "repository": "https://github.com/nabucasa/ESP-Web-flasher",

script/develop

@@ -11,7 +11,7 @@ trap "kill 0" EXIT
 # Run tsc once as rollup expects those files
 npm exec -- tsc || true
 
-npm exec -- serve &
+npm exec -- serve -p 5004 &
 npm exec -- tsc --watch &
 npm exec -- rollup -c --watch &
 wait

src/esp_loader.ts

@@ -150,10 +150,10 @@ export class ESPLoader extends EventTarget {
       }
     } catch (err) {
       console.error("Read loop got disconnected");
-      // Disconnected!
-      this.connected = false;
-      this.dispatchEvent(new Event("disconnect"));
     }
+    // Disconnected!
+    this.connected = false;
+    this.dispatchEvent(new Event("disconnect"));
     this.logger.debug("Finished read loop");
   }
 
@@ -1148,11 +1148,14 @@ export class ESPLoader extends EventTarget {
       await this._parent.disconnect();
       return;
     }
-    if (this._reader) {
-      await this._reader.cancel();
-    }
     await this.port.writable!.getWriter().close();
-    await this.port.close();
+    await new Promise((resolve) => {
+      if (!this._reader) {
+        resolve(undefined);
+      }
+      this.addEventListener("disconnect", resolve, { once: true });
+      this._reader!.cancel();
+    });
     this.connected = false;
   }
 }