deps: upgrade npm to 6.1.0

PR-URL: https://github.com/nodejs/node/pull/20190
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

1 files changed, 44 insertions, 0 deletions

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+# minizlib
+
+A tiny fast zlib stream built on [minipass](http://npm.im/minipass)
+and Node.js's zlib binding.
+
+This module was created to serve the needs of
+[node-tar](http://npm.im/tar) v2.  If your needs are different, then
+it may not be for you.
+
+## How does this differ from the streams in `require('zlib')`?
+
+First, there are no convenience methods to compress or decompress a
+buffer.  If you want those, use the built-in `zlib` module.  This is
+only streams.
+
+This module compresses and decompresses the data as fast as you feed
+it in.  It is synchronous, and runs on the main process thread.  Zlib
+operations can be high CPU, but they're very fast, and doing it this
+way means much less bookkeeping and artificial deferral.
+
+Node's built in zlib streams are built on top of `stream.Transform`.
+They do the maximally safe thing with respect to consistent
+asynchrony, buffering, and backpressure.
+
+This module _does_ support backpressure, and will buffer output chunks
+that are not consumed, but is less of a mediator between the input and
+output.  There is no high or low watermarks, no state objects, and so
+artificial async deferrals.  It will not protect you from Zalgo.
+
+If you write, data will be emitted right away.  If you write
+everything synchronously in one tick, and you are listening to the
+`data` event to consume it, then it'll all be emitted right away in
+that same tick.  If you want data to be emitted in the next tick, then
+write it in the next tick.
+
+It is thus the responsibility of the reader and writer to manage their
+own consumption and process execution flow.
+
+The goal is to compress and decompress as fast as possible, even for
+files that are too large to store all in one buffer.
+
+The API is very similar to the built-in zlib module.  There are
+classes that you instantiate with `new` and they are streams that can
+be piped together.