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node_modules/discord.js/src/managers/VoiceStateManager.js

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+'use strict';
+
+const BaseManager = require('./BaseManager');
+const VoiceState = require('../structures/VoiceState');
+
+/**
+ * Manages API methods for VoiceStates and stores their cache.
+ * @extends {BaseManager}
+ */
+class VoiceStateManager extends BaseManager {
+  constructor(guild, iterable) {
+    super(guild.client, iterable, VoiceState);
+    /**
+     * The guild this manager belongs to
+     * @type {Guild}
+     */
+    this.guild = guild;
+  }
+
+  /**
+   * The cache of this manager
+   * @type {Collection<Snowflake, VoiceState>}
+   * @name VoiceStateManager#cache
+   */
+
+  add(data, cache = true) {
+    const existing = this.cache.get(data.user_id);
+    if (existing) return existing._patch(data);
+
+    const entry = new VoiceState(this.guild, data);
+    if (cache) this.cache.set(data.user_id, entry);
+    return entry;
+  }
+}
+
+module.exports = VoiceStateManager;