message: Fix mappings legacy tester
diff: @@ -45,7 +45,7 @@ export class IrcServer {
  private homeserverDomain: string, private expiryTimeSeconds: number = 0) {
  // This ensures that legacy mappings still work, but we prod the user to update.
  const stringMappings = Object.entries(config.mappings || {}).filter(([, data]) => {
  - return typeof(data) === "string"
  + return Array.isArray(data);
  }) as unknown as [string, string[]][];
  if (stringMappings.length) {
  