remove rocket chat

src/app/utils/ToBase64.ts

@@ -0,0 +1,30 @@
+import { err, ok, Result } from "neverthrow";
+
+/**
+ * Retrieves a `FileReader` instance, accounting for potential Zone.js modifications.
+ * @returns {FileReader} The original `FileReader` instance or a modified one if applicable.
+ */
+function getFileReader(): FileReader {
+  const fileReader = new FileReader();
+  const zoneOriginalInstance = (fileReader as any)["__zone_symbol__originalInstance"];
+  return zoneOriginalInstance || fileReader;
+}
+
+/**
+ * Converts a `File` object to a Base64 encoded string.
+ * @param {File} file - The file to be converted.
+ * @returns {Promise<Result<string, any>>} A promise that resolves with a `Result` object containing either the Base64 encoded string or an error.
+ */
+export function JSFileToBase64(file: File): Promise<Result<string, any>> {
+  return new Promise((resolve, reject) => {
+    var reader = getFileReader();
+    reader.readAsDataURL(file);
+    reader.onload = function () {
+      resolve(ok(reader.result as string));
+    };
+    reader.onerror = function (error) {
+      console.log('Error: ', error);
+      resolve(err(error));
+    };
+  });
+}