Add production dependencies

node_modules/rtlcss/lib/state.js

@@ -0,0 +1,47 @@
+'use strict'
+var directiveParser = require('./directive-parser.js')
+module.exports = {
+  stack: [],
+  pop: function (current) {
+    var index = this.stack.indexOf(current)
+    if (index !== -1) {
+      this.stack.splice(index, 1)
+    }
+    if (!current.preserve) {
+      current.source.remove()
+    }
+  },
+  parse: function (node, lazyResult, callback) {
+    var current
+    var metadata = directiveParser(node)
+    if (metadata) {
+      if (!metadata.begin && metadata.end) {
+        this.walk(function (item) {
+          if (metadata.name === item.metadata.name) {
+            this.pop(item)
+            current = {'metadata': metadata, 'directive': item.directive, 'source': node, 'preserve': item.preserve}
+            return false
+          }
+        }.bind(this))
+      } else {
+        current = {'metadata': metadata, 'directive': null, 'source': node, 'preserve': null}
+      }
+
+      if (current === undefined) {
+        lazyResult.warn('found end "' + metadata.name + '" without a matching begin.', {node: node})
+      } else if (callback(current)) {
+        this.stack.push(current)
+      } else if (!current.preserve) {
+        current.source.remove()
+      }
+    }
+  },
+  walk: function (callback) {
+    var len = this.stack.length
+    while (--len > -1) {
+      if (!callback(this.stack[len])) {
+        break
+      }
+    }
+  }
+}