refactor(Util): remove convertToBuffer (#5237)

src/util/Util.js

@@ -297,30 +297,6 @@ class Util {
     return given;
   }
 
-  /**
-   * Converts an ArrayBuffer or string to a Buffer.
-   * @param {ArrayBuffer|string} ab ArrayBuffer to convert
-   * @returns {Buffer}
-   * @private
-   */
-  static convertToBuffer(ab) {
-    if (typeof ab === 'string') ab = Util.str2ab(ab);
-    return Buffer.from(ab);
-  }
-
-  /**
-   * Converts a string to an ArrayBuffer.
-   * @param {string} str String to convert
-   * @returns {ArrayBuffer}
-   * @private
-   */
-  static str2ab(str) {
-    const buffer = new ArrayBuffer(str.length * 2);
-    const view = new Uint16Array(buffer);
-    for (var i = 0, strLen = str.length; i < strLen; i++) view[i] = str.charCodeAt(i);
-    return buffer;
-  }
-
   /**
    * Makes an Error from a plain info object.
    * @param {Object} obj Error info

typings/index.d.ts

@@ -1559,7 +1559,6 @@ declare module 'discord.js' {
     public static cleanContent(str: string, message: Message): string;
     public static removeMentions(str: string): string;
     public static cloneObject(obj: object): object;
-    public static convertToBuffer(ab: ArrayBuffer | string): Buffer;
     public static delayFor(ms: number): Promise<void>;
     public static discordSort<K, V extends { rawPosition: number; id: string }>(
       collection: Collection<K, V>,
@@ -1592,7 +1591,6 @@ declare module 'discord.js' {
       reason?: string,
     ): Promise<{ id: Snowflake; position: number }[]>;
     public static splitMessage(text: StringResolvable, options?: SplitOptions): string[];
-    public static str2ab(str: string): ArrayBuffer;
   }
 
   class VoiceBroadcast extends EventEmitter {