buffer<Buffer> | <TypedArray> | <DataView> A buffer that will be filled with the file data read.
offset<integer> The location in the buffer at which to start filling.
length<integer> The number of bytes to read.
position<integer> | <null> The location where to begin reading data from the file. If
null, data will be read from the current file position, and the position will be updated. If
positionis an integer, the current file position will remain unchanged.
- Returns: <Promise> Fulfills upon success with an object with two properties:
Reads data from the file and stores that in the given buffer.
If the file is not modified concurrently, the end-of-file is reached when the number of bytes read is zero.