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+# fs-minipass
+
+Filesystem streams based on [minipass](http://npm.im/minipass).
+
+4 classes are exported:
+
+- ReadStream
+- ReadStreamSync
+- WriteStream
+- WriteStreamSync
+
+When using `ReadStreamSync`, all of the data is made available
+immediately upon consuming the stream. Nothing is buffered in memory
+when the stream is constructed. If the stream is piped to a writer,
+then it will synchronously `read()` and emit data into the writer as
+fast as the writer can consume it. (That is, it will respect
+backpressure.) If you call `stream.read()` then it will read the
+entire file and return the contents.
+
+When using `WriteStreamSync`, every write is flushed to the file
+synchronously. If your writes all come in a single tick, then it'll
+write it all out in a single tick. It's as synchronous as you are.
+
+The async versions work much like their node builtin counterparts,
+with the exception of introducing significantly less Stream machinery
+overhead.
+
+## USAGE
+
+It's just streams, you pipe them or read() them or write() to them.
+
+```js
+const fsm = require('fs-minipass')
+const readStream = new fsm.ReadStream('file.txt')
+const writeStream = new fsm.WriteStream('output.txt')
+writeStream.write('some file header or whatever\n')
+readStream.pipe(writeStream)
+```
+
+## ReadStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `readSize` The size of reads to do, defaults to 16MB
+- `size` The size of the file, if known. Prevents zero-byte read()
+ call at the end.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+ closed when the file is done being read.
+
+## WriteStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `mode` The mode to create the file with. Defaults to `0o666`.
+- `start` The position in the file to start reading. If not
+ specified, then the file will start writing at position zero, and be
+ truncated by default.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+ closed when the stream is ended.
+- `flags` Flags to use when opening the file. Irrelevant if `fd` is
+ passed in, since file won't be opened in that case. Defaults to
+ `'a'` if a `pos` is specified, or `'w'` otherwise.