From 7e3e47b4babf31fe9e9d8d9c372c8288c27e2305 Mon Sep 17 00:00:00 2001
From: Jim Richter <jim-x@web.de>
Date: Tue, 16 Mar 2021 16:25:50 +0100
Subject: [PATCH] fix: lazy load ai worker

---
 view/src/helpers/AI.ts | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/view/src/helpers/AI.ts b/view/src/helpers/AI.ts
index 5d93997..efc53e5 100644
--- a/view/src/helpers/AI.ts
+++ b/view/src/helpers/AI.ts
@@ -1,20 +1,26 @@
 import { bufToImageUrl, imageToArray } from ".";
 
-const worker = new Worker("build/workers/ai-worker.js");
+let worker;
 
 let i = 0;
 
 let cb = {};
 
-worker.addEventListener("message", ev => {
-  if (ev.data.i in cb) {
-    cb[ev.data.i](ev.data.result);
-    delete cb[ev.data.i]
-    delete ev.data.i;
-  }
-})
+
 
 const analyze = (img: Image) => new Promise(async (res, rej) => {
+
+  if (!worker) {
+    worker = new Worker("build/workers/ai-worker.js");
+    worker.addEventListener("message", ev => {
+      if (ev.data.i in cb) {
+        cb[ev.data.i](ev.data.result);
+        delete cb[ev.data.i]
+        delete ev.data.i;
+      }
+    })
+  }
+
   i++;
   const _i = i;