236     ReadStream = legStreams.ReadStream
240   var fs$ReadStream = fs.ReadStream
242     ReadStream.prototype = Object.create(fs$ReadStream.prototype)  class
243     ReadStream.prototype.open = ReadStream$open  method in ReadStream
249     WriteStream.prototype.open = WriteStream$open  method in WriteStream
254       return ReadStream
257       ReadStream = val
274   var FileReadStream = ReadStream
297   function ReadStream (path, options) {
298     if (this instanceof ReadStream)
301       return ReadStream.apply(Object.create(ReadStream.prototype), arguments)
306     open(that.path, that.flags, that.mode, function (err, fd) {
329     open(that.path, that.flags, that.mode, function (err, fd) {
341     return new fs.ReadStream(path, options)
348   var fs$open = fs.open
349   fs.open = open
350   function open (path, flags, mode, cb) {  function