/**
 * Get a channel user mode from their prefix.
 * @param prefixOrNick Prefix on its own (`@`, `+`, etc) or a nick `@Diamond`
 * @param supportedModes Object of channel modes `{ 'o': '@' }`
 * @returns Mode for prefix symbol
 */
export const modeFromPrefix = (
  prefixOrNick: string,
  supportedModes: Record<string, string>,
) => {
  const pfx = prefixOrNick.substring(0, 1);
  return Object.keys(supportedModes)[
    Object.values(supportedModes).indexOf(pfx)
  ];
};