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diff --git a/node_modules/reduce-function-call/CHANGELOG.md b/node_modules/reduce-function-call/CHANGELOG.md
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+# 1.0.2 - 2016-11-28
+
+- Bump `balanced-match` dependency version
+([postcss-cssnext/#327](https://github.com/MoOx/postcss-cssnext/issues/327) - @wtgtybhertgeghgtwtg).
+
+# 1.0.1 - 2014-08-06
+
+* Fix issue with regex and nested call
+
+# 1.0.0 - 2014-08-06
+
+First release
diff --git a/node_modules/reduce-function-call/LICENSE b/node_modules/reduce-function-call/LICENSE
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+The MIT License (MIT)
+
+Copyright (c) 2014 "MoOx" Maxime Thirouin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/node_modules/reduce-function-call/README.md b/node_modules/reduce-function-call/README.md
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+# reduce-function-call [![Build Status](https://travis-ci.org/MoOx/reduce-function-call.png)](https://travis-ci.org/MoOx/reduce-function-call)
+
+> Reduce function calls in a string, using a callback
+
+## Installation
+
+```bash
+npm install reduce-function-call
+```
+
+## Usage
+
+```js
+var reduceFunctionCall = require("reduce-function-call")
+
+reduceFunctionCall("foo(1)", "foo", function(body) {
+  // body === "1"
+  return parseInt(body, 10) + 1
+})
+// "2"
+
+var nothingOrUpper = function(body, functionIdentifier) {
+  // ignore empty value
+  if (body === "") {
+    return functionIdentifier + "()"
+  }
+
+  return body.toUpperCase()
+}
+
+reduceFunctionCall("bar()", "bar", nothingOrUpper)
+// "bar()"
+
+reduceFunctionCall("upper(baz)", "upper", nothingOrUpper)
+// "BAZ"
+
+reduceFunctionCall("math(math(2 + 2) * 4 + math(2 + 2)) and other things", "math", function(body, functionIdentifier, call) {
+  try {
+    return eval(body)
+  }
+  catch (e) {
+    return call
+  }
+})
+// "20 and other things"
+
+reduceFunctionCall("sha bla blah() blaa bla() abla() aabla() blaaa()", /\b([a-z]?bla[a-z]?)\(/, function(body, functionIdentifier) {
+  if (functionIdentifier === "bla") {
+    return "ABRACADABRA"
+  }
+  return functionIdentifier.replace("bla", "!")
+}
+// "sha bla !h blaa ABRACADABRA a! aabla() blaaa()"
+```
+
+See [unit tests](test/index.js) for others examples.
+
+## Contributing
+
+Work on a branch, install dev-dependencies, respect coding style & run tests before submitting a bug fix or a feature.
+
+```bash
+git clone https://github.com/MoOx/reduce-function-call.git
+git checkout -b patch-1
+npm install
+npm test
+```
+
+## [Changelog](CHANGELOG.md)
+
+## [License](LICENSE-MIT)
diff --git a/node_modules/reduce-function-call/index.js b/node_modules/reduce-function-call/index.js
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+/*
+ * Module dependencies
+ */
+var balanced = require("balanced-match")
+
+/**
+ * Expose `reduceFunctionCall`
+ *
+ * @type {Function}
+ */
+module.exports = reduceFunctionCall
+
+/**
+ * Walkthrough all expressions, evaluate them and insert them into the declaration
+ *
+ * @param {Array} expressions
+ * @param {Object} declaration
+ */
+
+function reduceFunctionCall(string, functionRE, callback) {
+  var call = string
+  return getFunctionCalls(string, functionRE).reduce(function(string, obj) {
+    return string.replace(obj.functionIdentifier + "(" + obj.matches.body + ")", evalFunctionCall(obj.matches.body, obj.functionIdentifier, callback, call, functionRE))
+  }, string)
+}
+
+/**
+ * Parses expressions in a value
+ *
+ * @param {String} value
+ * @returns {Array}
+ * @api private
+ */
+
+function getFunctionCalls(call, functionRE) {
+  var expressions = []
+
+  var fnRE = typeof functionRE === "string" ? new RegExp("\\b(" + functionRE + ")\\(") : functionRE
+  do {
+    var searchMatch = fnRE.exec(call)
+    if (!searchMatch) {
+      return expressions
+    }
+    if (searchMatch[1] === undefined) {
+      throw new Error("Missing the first couple of parenthesis to get the function identifier in " + functionRE)
+    }
+    var fn = searchMatch[1]
+    var startIndex = searchMatch.index
+    var matches = balanced("(", ")", call.substring(startIndex))
+
+    if (!matches || matches.start !== searchMatch[0].length - 1) {
+      throw new SyntaxError(fn + "(): missing closing ')' in the value '" + call + "'")
+    }
+
+    expressions.push({matches: matches, functionIdentifier: fn})
+    call = matches.post
+  }
+  while (fnRE.test(call))
+
+  return expressions
+}
+
+/**
+ * Evaluates an expression
+ *
+ * @param {String} expression
+ * @returns {String}
+ * @api private
+ */
+
+function evalFunctionCall (string, functionIdentifier, callback, call, functionRE) {
+  // allow recursivity
+  return callback(reduceFunctionCall(string, functionRE, callback), functionIdentifier, call)
+}
diff --git a/node_modules/reduce-function-call/package.json b/node_modules/reduce-function-call/package.json
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+{
+  "name": "reduce-function-call",
+  "version": "1.0.2",
+  "description": "Reduce function calls in a string, using a callback",
+  "keywords": [
+    "string",
+    "reduce",
+    "replacement",
+    "function",
+    "call",
+    "eval",
+    "interpret"
+  ],
+  "author": "MoOx",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/MoOx/reduce-function-call.git"
+  },
+  "files": [
+    "CHANGELOG.md",
+    "LICENSE",
+    "README.md",
+    "index.js"
+  ],
+  "dependencies": {
+    "balanced-match": "^0.4.2"
+  },
+  "devDependencies": {
+    "jscs": "^2.0.0",
+    "jshint": "^2.8.0",
+    "jshint-stylish": "^2.0.1",
+    "npmpub": "^3.1.0",
+    "tap-colorize": "^1.2.0",
+    "tape": "^4.0.3"
+  },
+  "scripts": {
+    "jscs": "jscs *.js **/*.js",
+    "jshint": "jshint . --exclude node_modules --reporter node_modules/jshint-stylish/index.js",
+    "test": "npm run jscs && npm run jshint && tape test | tap-colorize",
+    "release": "npmpub"
+  }
+}