Function getBOMEncoding

getBOMEncoding(
input: ArrayBufferLike | ArrayBufferView<ArrayBufferLike>,
): "utf-8" | "utf-16le" | "utf-16be"
Implements BOM sniff legacy hook.

Given a TypedArray or an ArrayBuffer instance input, returns either of:
- 'utf-8', if input starts with UTF-8 byte order mark.
- 'utf-16le', if input starts with UTF-16LE byte order mark.
- 'utf-16be', if input starts with UTF-16BE byte order mark.
- null otherwise.
Parameters
- input: ArrayBufferLike | ArrayBufferView<ArrayBufferLike>
  The bytes to check for BOM
Returns "utf-8" | "utf-16le" | "utf-16be"
The encoding ('utf-8', 'utf-16le', 'utf-16be'), or null if no BOM found
- Defined in encoding.d.ts:58