1 files changed, 20 insertions, 0 deletions
diff --git a/deps/npm/node_modules/slide/lib/chain.js b/deps/npm/node_modules/slide/lib/chain.js
new file mode 100644
index 0000000000..17b3711494
--- /dev/null
+++ b/deps/npm/node_modules/slide/lib/chain.js
@@ -0,0 +1,20 @@
+module.exports = chain
+var bindActor = require("./bind-actor.js")
+chain.first = {} ; chain.last = {}
+function chain (things, cb) {
+  var res = []
+  ;(function LOOP (i, len) {
+    if (i >= len) return cb(null,res)
+    if (Array.isArray(things[i]))
+      things[i] = bindActor.apply(null,
+        things[i].map(function(i){
+          return (i===chain.first) ? res[0]
+           : (i===chain.last)
+             ? res[res.length - 1] : i }))
+    if (!things[i]) return LOOP(i + 1, len)
+    things[i](function (er, data) {
+      if (er) return cb(er, res)
+      if (data !== undefined) res = res.concat(data)
+      LOOP(i + 1, len)
+    })
+  })(0, things.length) }