Front: remove file64 dependency

front/utils/base64ToBlob.ts

@@ -0,0 +1,23 @@
+// SRC: https://github.com/encrypit/file64/blob/master/src/base64-to-blob.ts
+export async function base64ToBlob(base64: string): Promise<Blob> {
+	const response = await fetch(base64);
+	let blob = await response.blob();
+	const mimeType = getMimeType(base64);
+	if (mimeType) {
+		// https://stackoverflow.com/a/50875615
+		blob = blob.slice(0, blob.size, mimeType);
+	}
+	return blob;
+}
+
+const mimeRegex = /^data:(.+);base64,/;
+
+/**
+ * Gets MIME type from Base64.
+ *
+ * @param base64 - Base64.
+ * @returns - MIME type.
+ */
+function getMimeType(base64: string) {
+	return base64.match(mimeRegex)?.slice(1, 2).pop();
+}