src/Drivers/LocalFileSystem.js
function isReadableStream (stream) {
  return stream !== null
    && typeof (stream) === 'object'
    && typeof (stream.pipe) === 'function'
    && typeof (stream._read) === 'function'
    && typeof (stream._readableState) === 'object'
    && stream.readable !== false
}
function isReadableStream (stream) {
  return stream !== null
    && typeof (stream) === 'object'
    && typeof (stream.pipe) === 'function'
    && typeof (stream._read) === 'function'
    && typeof (stream._readableState) === 'object'
    && stream.readable !== false
}
function isReadableStream ( stream ) { return stream !== null && typeof ( stream ) === 'object' && typeof ( stream . pipe ) === 'function' && typeof ( stream . _read ) === 'function' && typeof ( stream . _readableState ) === 'object' && stream . readable !== false }
Returns a boolean indication if stream param
is a readable stream or not.

@param {*} stream

@return {Boolean}
Returns a boolean indication if stream param is a readable stream or not .