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, 28 insertions, 0 deletions

diff --git a/deps/npm/node_modules/through/test/async.js b/deps/npm/node_modules/through/test/async.js
new file mode 100644
index 0000000000..f6fc95f4ff
--- /dev/null
+++ b/deps/npm/node_modules/through/test/async.js
@@ -0,0 +1,28 @@
+var from = require('from')
+var through = require('../')
+
+var tape = require('tape')
+
+tape('simple async example', function (t) {
+
+  var n = 0, expected = [1,2,3,4,5], actual = []
+  from(expected)
+  .pipe(through(function(data) {
+    this.pause()
+    n ++
+    setTimeout(function(){
+      console.log('pushing data', data)
+      this.push(data)
+      this.resume()
+    }.bind(this), 300)
+  })).pipe(through(function(data) {
+    console.log('pushing data second time', data);
+    this.push(data)
+  })).on('data', function (d) {
+    actual.push(d)
+  }).on('end', function() {
+    t.deepEqual(actual, expected)
+    t.end()
+  })
+
+})