Add an ImageHelper for promise conversion

app/Helpers/ImageHelpers.ts

@@ -0,0 +1,12 @@
+export async function loadImage(img: HTMLImageElement) {
+  return new Promise<HTMLImageElement>((resolve, reject) => {
+    img.onload = () => resolve(img);
+    img.onerror = reject;
+  });
+}
+
+export async function loadImageFromUrl(url: string) {
+  const img = new Image();
+  img.src = url;
+  return loadImage(img);
+}