web: Fix import path. Clarify type.

Author: GirlBossRush

packages/esbuild-plugin-live-reload/client/ESBuildObserver.js

@@ -2,17 +2,16 @@
  * @file Client-side observer for ESBuild events.
  *
  * @import { Logger } from "#shared";
+ * @import { Message as ESBuildMessage } from "esbuild";
  */
 
 /// <reference types="./types.js" />
 
-import { createLogger } from "../shared/index.js";
+import { createLogger } from "#shared";
 
-/**
- * @file Client-side observer for ESBuild events.
- *
- * @import { Message as ESBuildMessage } from "esbuild";
- */
+if (typeof EventSource === "undefined") {
+    throw new TypeError("Environment doesn't appear to have an EventSource constructor");
+}
 
 /**
  * @template {unknown} [Data=unknown]

packages/esbuild-plugin-live-reload/package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "@goauthentik/esbuild-plugin-live-reload",
-    "version": "1.2.0",
+    "version": "1.2.1",
     "description": "ESBuild + browser refresh. Build completes, page reloads.",
     "license": "MIT",
     "scripts": {