Better document the BYOB-stream requirement (#691)

Co-authored-by: Sindre Sorhus <[email protected]>

readme.md

@@ -178,10 +178,10 @@ A readable stream representing file data.
 
 Detect the file type of a [`Blob`](https://developer.mozilla.org/docs/Web/API/Blob),
 
-[!TIP]
+> [!TIP]
 > A [`File` object](https://developer.mozilla.org/docs/Web/API/File) is a `Blob` and can be passed in here.
 
-It will **stream** the underlying Blob, and required a [ReadableStreamBYOBReader](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader) which **require Node.js ≥ 20**.
+It will **stream** the underlying Blob.
 
 The file type is detected by checking the [magic number](https://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_numbers_in_files) of the blob.
 
@@ -204,6 +204,21 @@ console.log(await fileTypeFromBlob(blob));
 //=> {ext: 'txt', mime: 'text/plain'}
 ```
 
+> [!WARNING]
+> This method depends on [ReadableStreamBYOBReader](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader) which **requires Node.js ≥ 20**
+> and [may not be available in all modern browsers](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader#browser_compatibility).
+
+To work around this limitation, you can use an alternative approach to read and process the `Blob` without relying on streaming:
+
+```js
+import {fileTypeFromBuffer} from 'file-type';
+
+async function readFromBlobWithoutStreaming(blob) {
+	const buffer = await blob.arrayBuffer();
+	return fileTypeFromBuffer(buffer);
+}
+```
+
 #### blob
 
 Type: [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob)