position<integer> | <null> Default:
Read from a file specified by
fd and write to an array of
position is the offset from the beginning of the file from where data
should be read. If
typeof position !== 'number', the data will be read
from the current position.
The callback will be given three arguments:
bytesRead is how many bytes were read from the file.
If this method is invoked as its
util.promisify()ed version, it returns
a promise for an