chore: add internal documentation comments for utility functions

Author: jeremy-code

src/libexif/utils/getDataAsTypedArray.ts

@@ -10,6 +10,9 @@ import {
 } from "../../internal/index.ts";
 import { exifFormatGetSize } from "../exifFormat.ts";
 
+/**
+ * @internal
+ */
 const getDataAsTypedArray = (
   byteOffset: number,
   components: number, // number of elements in the array (.components)

src/libexif/utils/getExifDataFromReadableStream.ts

@@ -1,6 +1,9 @@
 import type { ExifData } from "../ExifData.ts";
 import { ExifLoader } from "../ExifLoader.ts";
 
+/**
+ * @internal
+ */
 const getExifDataFromReadableStream = async (
   readableStream: ReadableStream,
 ): Promise<ExifData> => {

src/libexif/utils/setDataFromTypedArray.ts

@@ -11,6 +11,9 @@ import {
   exifSetSShort,
 } from "../exifUtils.ts";
 
+/**
+ * @internal
+ */
 const setDataFromTypedArray = (
   typedArray: ValidTypedArray,
   format: Format,