Update FileLike.stream() typings once again and add documentation for FileLike fields.

Author: octet-stream

lib/FileLike.ts

@@ -1,13 +1,28 @@
 export interface FileLike {
+  /**
+   * Name of the file referenced by the File object.
+   */
   name: string
 
+  /**
+   * Returns the media type ([`MIME`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types)) of the file represented by a `File` object.
+   */
   type: string
 
+  /**
+   * Size of the file parts in bytes
+   */
   size: number
 
+  /**
+   * The last modified date of the file as the number of milliseconds since the Unix epoch (January 1, 1970 at midnight). Files without a known last modified date return the current date.
+   */
   lastModified: number
 
-  stream(): {[Symbol.asyncIterator](): AsyncIterator<Uint8Array>}
+  /**
+   * Returns a [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) which upon reading returns the data contained within the [`File`](https://developer.mozilla.org/en-US/docs/Web/API/File).
+   */
+  stream(): AsyncIterable<Uint8Array>
 
   [Symbol.toStringTag]: string
 }