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diff --git a/node_modules/nanomatch/lib/utils.js b/node_modules/nanomatch/lib/utils.js
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+'use strict';
+
+var utils = module.exports;
+var path = require('path');
+
+/**
+ * Module dependencies
+ */
+
+var isWindows = require('is-windows')();
+var Snapdragon = require('snapdragon');
+utils.define = require('define-property');
+utils.diff = require('arr-diff');
+utils.extend = require('extend-shallow');
+utils.pick = require('object.pick');
+utils.typeOf = require('kind-of');
+utils.unique = require('array-unique');
+
+/**
+ * Returns true if the given value is effectively an empty string
+ */
+
+utils.isEmptyString = function(val) {
+  return String(val) === '' || String(val) === './';
+};
+
+/**
+ * Returns true if the platform is windows, or `path.sep` is `\\`.
+ * This is defined as a function to allow `path.sep` to be set in unit tests,
+ * or by the user, if there is a reason to do so.
+ * @return {Boolean}
+ */
+
+utils.isWindows = function() {
+  return path.sep === '\\' || isWindows === true;
+};
+
+/**
+ * Return the last element from an array
+ */
+
+utils.last = function(arr, n) {
+  return arr[arr.length - (n || 1)];
+};
+
+/**
+ * Get the `Snapdragon` instance to use
+ */
+
+utils.instantiate = function(ast, options) {
+  var snapdragon;
+  // if an instance was created by `.parse`, use that instance
+  if (utils.typeOf(ast) === 'object' && ast.snapdragon) {
+    snapdragon = ast.snapdragon;
+  // if the user supplies an instance on options, use that instance
+  } else if (utils.typeOf(options) === 'object' && options.snapdragon) {
+    snapdragon = options.snapdragon;
+  // create a new instance
+  } else {
+    snapdragon = new Snapdragon(options);
+  }
+
+  utils.define(snapdragon, 'parse', function(str, options) {
+    var parsed = Snapdragon.prototype.parse.call(this, str, options);
+    parsed.input = str;
+
+    // escape unmatched brace/bracket/parens
+    var last = this.parser.stack.pop();
+    if (last && this.options.strictErrors !== true) {
+      var open = last.nodes[0];
+      var inner = last.nodes[1];
+      if (last.type === 'bracket') {
+        if (inner.val.charAt(0) === '[') {
+          inner.val = '\\' + inner.val;
+        }
+
+      } else {
+        open.val = '\\' + open.val;
+        var sibling = open.parent.nodes[1];
+        if (sibling.type === 'star') {
+          sibling.loose = true;
+        }
+      }
+    }
+
+    // add non-enumerable parser reference
+    utils.define(parsed, 'parser', this.parser);
+    return parsed;
+  });
+
+  return snapdragon;
+};
+
+/**
+ * Create the key to use for memoization. The key is generated
+ * by iterating over the options and concatenating key-value pairs
+ * to the pattern string.
+ */
+
+utils.createKey = function(pattern, options) {
+  if (typeof options === 'undefined') {
+    return pattern;
+  }
+  var key = pattern;
+  for (var prop in options) {
+    if (options.hasOwnProperty(prop)) {
+      key += ';' + prop + '=' + String(options[prop]);
+    }
+  }
+  return key;
+};
+
+/**
+ * Cast `val` to an array
+ * @return {Array}
+ */
+
+utils.arrayify = function(val) {
+  if (typeof val === 'string') return [val];
+  return val ? (Array.isArray(val) ? val : [val]) : [];
+};
+
+/**
+ * Return true if `val` is a non-empty string
+ */
+
+utils.isString = function(val) {
+  return typeof val === 'string';
+};
+
+/**
+ * Return true if `val` is a non-empty string
+ */
+
+utils.isRegex = function(val) {
+  return utils.typeOf(val) === 'regexp';
+};
+
+/**
+ * Return true if `val` is a non-empty string
+ */
+
+utils.isObject = function(val) {
+  return utils.typeOf(val) === 'object';
+};
+
+/**
+ * Escape regex characters in the given string
+ */
+
+utils.escapeRegex = function(str) {
+  return str.replace(/[-[\]{}()^$|*+?.\\/\s]/g, '\\$&');
+};
+
+/**
+ * Combines duplicate characters in the provided `input` string.
+ * @param {String} `input`
+ * @returns {String}
+ */
+
+utils.combineDupes = function(input, patterns) {
+  patterns = utils.arrayify(patterns).join('|').split('|');
+  patterns = patterns.map(function(s) {
+    return s.replace(/\\?([+*\\/])/g, '\\$1');
+  });
+  var substr = patterns.join('|');
+  var regex = new RegExp('(' + substr + ')(?=\\1)', 'g');
+  return input.replace(regex, '');
+};
+
+/**
+ * Returns true if the given `str` has special characters
+ */
+
+utils.hasSpecialChars = function(str) {
+  return /(?:(?:(^|\/)[!.])|[*?+()|[\]{}]|[+@]\()/.test(str);
+};
+
+/**
+ * Normalize slashes in the given filepath.
+ *
+ * @param {String} `filepath`
+ * @return {String}
+ */
+
+utils.toPosixPath = function(str) {
+  return str.replace(/\\+/g, '/');
+};
+
+/**
+ * Strip backslashes before special characters in a string.
+ *
+ * @param {String} `str`
+ * @return {String}
+ */
+
+utils.unescape = function(str) {
+  return utils.toPosixPath(str.replace(/\\(?=[*+?!.])/g, ''));
+};
+
+/**
+ * Strip the drive letter from a windows filepath
+ * @param {String} `fp`
+ * @return {String}
+ */
+
+utils.stripDrive = function(fp) {
+  return utils.isWindows() ? fp.replace(/^[a-z]:[\\/]+?/i, '/') : fp;
+};
+
+/**
+ * Strip the prefix from a filepath
+ * @param {String} `fp`
+ * @return {String}
+ */
+
+utils.stripPrefix = function(str) {
+  if (str.charAt(0) === '.' && (str.charAt(1) === '/' || str.charAt(1) === '\\')) {
+    return str.slice(2);
+  }
+  return str;
+};
+
+/**
+ * Returns true if `str` is a common character that doesn't need
+ * to be processed to be used for matching.
+ * @param {String} `str`
+ * @return {Boolean}
+ */
+
+utils.isSimpleChar = function(str) {
+  return str.trim() === '' || str === '.';
+};
+
+/**
+ * Returns true if the given str is an escaped or
+ * unescaped path character
+ */
+
+utils.isSlash = function(str) {
+  return str === '/' || str === '\\/' || str === '\\' || str === '\\\\';
+};
+
+/**
+ * Returns a function that returns true if the given
+ * pattern matches or contains a `filepath`
+ *
+ * @param {String} `pattern`
+ * @return {Function}
+ */
+
+utils.matchPath = function(pattern, options) {
+  return (options && options.contains)
+    ? utils.containsPattern(pattern, options)
+    : utils.equalsPattern(pattern, options);
+};
+
+/**
+ * Returns true if the given (original) filepath or unixified path are equal
+ * to the given pattern.
+ */
+
+utils._equals = function(filepath, unixPath, pattern) {
+  return pattern === filepath || pattern === unixPath;
+};
+
+/**
+ * Returns true if the given (original) filepath or unixified path contain
+ * the given pattern.
+ */
+
+utils._contains = function(filepath, unixPath, pattern) {
+  return filepath.indexOf(pattern) !== -1 || unixPath.indexOf(pattern) !== -1;
+};
+
+/**
+ * Returns a function that returns true if the given
+ * pattern is the same as a given `filepath`
+ *
+ * @param {String} `pattern`
+ * @return {Function}
+ */
+
+utils.equalsPattern = function(pattern, options) {
+  var unixify = utils.unixify(options);
+  options = options || {};
+
+  return function fn(filepath) {
+    var equal = utils._equals(filepath, unixify(filepath), pattern);
+    if (equal === true || options.nocase !== true) {
+      return equal;
+    }
+    var lower = filepath.toLowerCase();
+    return utils._equals(lower, unixify(lower), pattern);
+  };
+};
+
+/**
+ * Returns a function that returns true if the given
+ * pattern contains a `filepath`
+ *
+ * @param {String} `pattern`
+ * @return {Function}
+ */
+
+utils.containsPattern = function(pattern, options) {
+  var unixify = utils.unixify(options);
+  options = options || {};
+
+  return function(filepath) {
+    var contains = utils._contains(filepath, unixify(filepath), pattern);
+    if (contains === true || options.nocase !== true) {
+      return contains;
+    }
+    var lower = filepath.toLowerCase();
+    return utils._contains(lower, unixify(lower), pattern);
+  };
+};
+
+/**
+ * Returns a function that returns true if the given
+ * regex matches the `filename` of a file path.
+ *
+ * @param {RegExp} `re` Matching regex
+ * @return {Function}
+ */
+
+utils.matchBasename = function(re) {
+  return function(filepath) {
+    return re.test(filepath) || re.test(path.basename(filepath));
+  };
+};
+
+/**
+ * Returns the given value unchanced.
+ * @return {any}
+ */
+
+utils.identity = function(val) {
+  return val;
+};
+
+/**
+ * Determines the filepath to return based on the provided options.
+ * @return {any}
+ */
+
+utils.value = function(str, unixify, options) {
+  if (options && options.unixify === false) {
+    return str;
+  }
+  if (options && typeof options.unixify === 'function') {
+    return options.unixify(str);
+  }
+  return unixify(str);
+};
+
+/**
+ * Returns a function that normalizes slashes in a string to forward
+ * slashes, strips `./` from beginning of paths, and optionally unescapes
+ * special characters.
+ * @return {Function}
+ */
+
+utils.unixify = function(options) {
+  var opts = options || {};
+  return function(filepath) {
+    if (opts.stripPrefix !== false) {
+      filepath = utils.stripPrefix(filepath);
+    }
+    if (opts.unescape === true) {
+      filepath = utils.unescape(filepath);
+    }
+    if (opts.unixify === true || utils.isWindows()) {
+      filepath = utils.toPosixPath(filepath);
+    }
+    return filepath;
+  };
+};