Making sure new comments don't clear out your current textarea.

- Making a better random string generator.
- Doing better incoming comment checking.
- Fixes #769

1 files changed, 20 insertions, 5 deletions

diff --git a/ui/src/utils.ts b/ui/src/utils.ts
index af54d77a..bdb9afbd 100644
--- a/ui/src/utils.ts
+++ b/ui/src/utils.ts
@@ -114,11 +114,26 @@ export const emojiPicker = new EmojiButton({
   // TODO i18n
 });
 
-export function randomStr() {
-  return Math.random()
-    .toString(36)
-    .replace(/[^a-z]+/g, '')
-    .substr(2, 10);
+const DEFAULT_ALPHABET =
+  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+function getRandomCharFromAlphabet(alphabet: string): string {
+  return alphabet.charAt(Math.floor(Math.random() * alphabet.length));
+}
+
+export function randomStr(
+  idDesiredLength: number = 20,
+  alphabet = DEFAULT_ALPHABET
+): string {
+  /**
+   * Create n-long array and map it to random chars from given alphabet.
+   * Then join individual chars as string
+   */
+  return Array.from({ length: idDesiredLength })
+    .map(() => {
+      return getRandomCharFromAlphabet(alphabet);
+    })
+    .join('');
 }
 
 export function wsJsonToRes(msg: WebSocketJsonResponse): WebSocketResponse {