refactor: extract Button to component, reformat all files with Prettier

frontend/lib/types.ts

@@ -69,13 +69,28 @@ export enum WordStatus {
 export enum ErrorCode {
   BadRequest = 400,
   Forbidden = 403,
+  NotFound = 404,
+  MethodNotAllowed = 405,
+  TooManyRequests = 429,
   InternalServerError = 500,
 
   InvalidState = 1001,
   InvalidOAuthCode = 1002,
   InvalidToken = 1003,
+  InviteRequired = 1004,
+  InvalidTicket = 1005,
+  InvalidUsername = 1006,
+  UsernameTaken = 1007,
+  InvitesDisabled = 1008,
+  InviteLimitReached = 1009,
+  InviteAlreadyUsed = 1010,
 
   UserNotFound = 2001,
+
+  MemberNotFound = 3001,
+  MemberLimitReached = 3002,
+
+  RequestTooBig = 4001,
 }
 
 export interface SignupRequest {