Add <User/Guild/Role/Channel>.createdAt (#620)

* Add Role.createdAt

* Add Channel.createdAt

* Add Guild.createdAt

* Add User.createdAt

* Change createdAt to Unix Timestamp

* Add createdAt to Emojis

* Change createdAt to Unix Timestamp

src/structures/Channel.js

@@ -31,6 +31,15 @@ class Channel {
     this.id = data.id;
   }
 
+  /**
+   * The unix timestamp the channel was created
+   * @readonly
+   * @type {Date}
+   */
+  get createdAt() {
+    return new Date((+this.id / 4194304) + 1420070400000).getTime();
+  }
+
   /**
    * Deletes the channel
    * @returns {Promise<Channel>}

src/structures/Emoji.js

@@ -43,6 +43,15 @@ class Emoji {
     this.managed = data.managed;
   }
 
+  /**
+   * The unix timestamp the emoji was created
+   * @readonly
+   * @type {Date}
+   */
+  get createdAt() {
+    return new Date((+this.id / 4194304) + 1420070400000).getTime();
+  }
+
   /**
    * A collection of roles this emoji is active for (empty if all), mapped by role ID.
    * @type {Collection<string, Role>}

src/structures/Guild.js

@@ -332,6 +332,15 @@ class Guild {
     }
   }
 
+  /**
+   * The unix timestamp the guild was created
+   * @readonly
+   * @type {Date}
+   */
+  get createdAt() {
+    return new Date((+this.id / 4194304) + 1420070400000).getTime();
+  }
+
   /**
    * The date at which the logged-in client joined the guild.
    * @type {Date}

src/structures/Role.js

@@ -67,6 +67,15 @@ class Role {
     this.managed = data.managed;
   }
 
+  /**
+   * The unix timestamp the role was created
+   * @readonly
+   * @type {Date}
+   */
+  get createdAt() {
+    return new Date((+this.id / 4194304) + 1420070400000).getTime();
+  }
+
   /**
    * Deletes the role
    * @returns {Promise<Role>}

src/structures/User.js

@@ -53,6 +53,15 @@ class User {
     this.game = data.game || this.game;
   }
 
+  /**
+   * The unix timestamp the user was created
+   * @readonly
+   * @type {Date}
+   */
+  get createdAt() {
+    return new Date((+this.id / 4194304) + 1420070400000).getTime();
+  }
+
   /**
    * When concatenated with a string, this automatically concatenates the User's mention instead of the User object.
    * @returns {string}