fix setImage cache

src/util/image-helper.ts

@@ -8,28 +8,29 @@ const base64Image = async (file: string) => {
   // read binary data
   const bitmap = await readFile(file);
   // convert binary data to base64 encoded string
-  cache[file] = Buffer.from(bitmap).toString('base64');
-  return cache[file];
+  return Buffer.from(bitmap).toString('base64');
 };
 
 const downloadBase64Image = async (url: string) => {
   // convert to base64 encoded string
   const res = await axios.get(url, { responseType: 'arraybuffer' });
-  // cache the result
-  cache[url] = Buffer.from(res.data).toString('base64');
-  return cache[url];
+  return Buffer.from(res.data).toString('base64');
 };
 
 // Convert url or file image to Base64 String
 export const imageToBase64 = async (image: string, useCache = false) => {
   if (useCache && cache[image]) {
     return cache[image];
   }
+
+  let imageBase64: string;
   const [, type] = (mime.lookup(image.replace(/\?.+$/, '')) || '').split('/');
   if (image.startsWith('http')) {
-    image = await downloadBase64Image(image);
+    imageBase64 = await downloadBase64Image(image);
   } else {
-    image = await base64Image(image);
+    imageBase64 = await base64Image(image);
   }
-  return `data:image/${type};base64, ${image}`;
+
+  cache[image] = `data:image/${type};base64, ${imageBase64}`;
+  return cache[image];
 };