fix(Collector): docs and types (#5937)

src/structures/MessageComponentInteractionCollector.js

@@ -82,7 +82,7 @@ class MessageComponentInteractionCollector extends Collector {
   /**
    * Handles an incoming interaction for possible collection.
    * @param {Interaction} interaction The interaction to possibly collect
-   * @returns {?(Snowflake|string)}
+   * @returns {?Snowflake}
    * @private
    */
   collect(interaction) {

src/structures/ReactionCollector.js

@@ -81,7 +81,7 @@ class ReactionCollector extends Collector {
    * Handles an incoming reaction for possible collection.
    * @param {MessageReaction} reaction The reaction to possibly collect
    * @param {User} user The user that added the reaction
-   * @returns {Promise<Snowflake|string>}
+   * @returns {Promise<?(Snowflake|string)>}
    * @private
    */
   async collect(reaction, user) {

src/structures/interfaces/Collector.js

@@ -95,7 +95,7 @@ class Collector extends EventEmitter {
    * @emits Collector#collect
    */
   async handleCollect(...args) {
-    const collect = this.collect(...args);
+    const collect = await this.collect(...args);
 
     if (collect && (await this.filter(...args, this.collected))) {
       this.collected.set(collect, args[0]);
@@ -269,7 +269,7 @@ class Collector extends EventEmitter {
    * be collected, or returns an object describing the data that should be stored.
    * @see Collector#handleCollect
    * @param {...*} args Any args the event listener emits
-   * @returns {?{key, value}} Data to insert into collection, if any
+   * @returns {?(*|Promise<?*>)} Data to insert into collection, if any
    * @abstract
    */
   collect() {}