refactor: fetch options consistency (#5824)

src/managers/ChannelManager.js

@@ -73,8 +73,7 @@ class ChannelManager extends BaseManager {
   /**
    * Obtains a channel from Discord, or the channel cache if it's already available.
    * @param {Snowflake} id ID of the channel
-   * @param {boolean} [cache=true] Whether to cache the new channel object if it isn't already
-   * @param {boolean} [force=false] Whether to skip the cache check and request the API
+   * @param {BaseFetchOptions} [options] Additional options for this fetch
    * @returns {Promise<?Channel>}
    * @example
    * // Fetch a channel by its id
@@ -82,7 +81,7 @@ class ChannelManager extends BaseManager {
    *   .then(channel => console.log(channel.name))
    *   .catch(console.error);
    */
-  async fetch(id, cache = true, force = false) {
+  async fetch(id, { cache = true, force = false } = {}) {
     if (!force) {
       const existing = this.cache.get(id);
       if (existing && !existing.partial) return existing;