<!-- Do not edit this file. It is automatically generated by API Documenter. --> [`FileSystemAdapter`](FileSystemAdapter) › [`readBinary`](FileSystemAdapter/readBinary) ## FileSystemAdapter.readBinary() method **Signature:** ```typescript readBinary(normalizedPath: string): Promise<ArrayBuffer>; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | <code>normalizedPath</code> | <code>string</code> | | **Returns:** `Promise<``ArrayBuffer``>`