Initial commit

nova-components/NovaLeader/node_modules/stream-each/index.js

@@ -0,0 +1,59 @@
+var eos = require('end-of-stream')
+var shift = require('stream-shift')
+
+module.exports = each
+
+function each (stream, fn, cb) {
+  var want = true
+  var error = null
+  var ended = false
+  var running = false
+  var calling = false
+
+  stream.on('readable', onreadable)
+  onreadable()
+
+  if (cb) eos(stream, {readable: true, writable: false}, done)
+  return stream
+
+  function done (err) {
+    if (!error) error = err
+    ended = true
+    if (!running) cb(error)
+  }
+
+  function onreadable () {
+    if (want) read()
+  }
+
+  function afterRead (err) {
+    running = false
+
+    if (err) {
+      error = err
+      if (ended) return cb(error)
+      stream.destroy(err)
+      return
+    }
+    if (ended) return cb(error)
+    if (!calling) read()
+  }
+
+  function read () {
+    while (!running && !ended) {
+      want = false
+
+      var data = shift(stream)
+      if (ended) return
+      if (data === null) {
+        want = true
+        return
+      }
+
+      running = true
+      calling = true
+      fn(data, afterRead)
+      calling = false
+    }
+  }
+}