added hover prefixer

1 files changed, 69 insertions, 90 deletions

diff --git a/node_modules/source-map/lib/array-set.js b/node_modules/source-map/lib/array-set.js
index fbd5c81c..40171b9a 100644
--- a/node_modules/source-map/lib/array-set.js
+++ b/node_modules/source-map/lib/array-set.js
@@ -5,117 +5,96 @@
  * http://opensource.org/licenses/BSD-3-Clause
  */
 
-var util = require('./util');
-var has = Object.prototype.hasOwnProperty;
-var hasNativeMap = typeof Map !== "undefined";
-
 /**
  * A data structure which is a combination of an array and a set. Adding a new
  * member is O(1), testing for membership is O(1), and finding the index of an
  * element is O(1). Removing elements from the set is not supported. Only
  * strings are supported for membership.
  */
-function ArraySet() {
-  this._array = [];
-  this._set = hasNativeMap ? new Map() : Object.create(null);
-}
-
-/**
- * Static method for creating ArraySet instances from an existing array.
- */
-ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
-  var set = new ArraySet();
-  for (var i = 0, len = aArray.length; i < len; i++) {
-    set.add(aArray[i], aAllowDuplicates);
+class ArraySet {
+  constructor() {
+    this._array = [];
+    this._set = new Map();
   }
-  return set;
-};
 
-/**
- * Return how many unique items are in this ArraySet. If duplicates have been
- * added, than those do not count towards the size.
- *
- * @returns Number
- */
-ArraySet.prototype.size = function ArraySet_size() {
-  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
-};
+  /**
+   * Static method for creating ArraySet instances from an existing array.
+   */
+  static fromArray(aArray, aAllowDuplicates) {
+    const set = new ArraySet();
+    for (let i = 0, len = aArray.length; i < len; i++) {
+      set.add(aArray[i], aAllowDuplicates);
+    }
+    return set;
+  }
 
-/**
- * Add the given string to this set.
- *
- * @param String aStr
- */
-ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
-  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
-  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
-  var idx = this._array.length;
-  if (!isDuplicate || aAllowDuplicates) {
-    this._array.push(aStr);
+  /**
+   * Return how many unique items are in this ArraySet. If duplicates have been
+   * added, than those do not count towards the size.
+   *
+   * @returns Number
+   */
+  size() {
+    return this._set.size;
   }
-  if (!isDuplicate) {
-    if (hasNativeMap) {
+
+  /**
+   * Add the given string to this set.
+   *
+   * @param String aStr
+   */
+  add(aStr, aAllowDuplicates) {
+    const isDuplicate = this.has(aStr);
+    const idx = this._array.length;
+    if (!isDuplicate || aAllowDuplicates) {
+      this._array.push(aStr);
+    }
+    if (!isDuplicate) {
       this._set.set(aStr, idx);
-    } else {
-      this._set[sStr] = idx;
     }
   }
-};
 
-/**
- * Is the given string a member of this set?
- *
- * @param String aStr
- */
-ArraySet.prototype.has = function ArraySet_has(aStr) {
-  if (hasNativeMap) {
-    return this._set.has(aStr);
-  } else {
-    var sStr = util.toSetString(aStr);
-    return has.call(this._set, sStr);
+  /**
+   * Is the given string a member of this set?
+   *
+   * @param String aStr
+   */
+  has(aStr) {
+      return this._set.has(aStr);
   }
-};
 
-/**
- * What is the index of the given string in the array?
- *
- * @param String aStr
- */
-ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
-  if (hasNativeMap) {
-    var idx = this._set.get(aStr);
+  /**
+   * What is the index of the given string in the array?
+   *
+   * @param String aStr
+   */
+  indexOf(aStr) {
+    const idx = this._set.get(aStr);
     if (idx >= 0) {
         return idx;
     }
-  } else {
-    var sStr = util.toSetString(aStr);
-    if (has.call(this._set, sStr)) {
-      return this._set[sStr];
-    }
+    throw new Error('"' + aStr + '" is not in the set.');
   }
 
-  throw new Error('"' + aStr + '" is not in the set.');
-};
-
-/**
- * What is the element at the given index?
- *
- * @param Number aIdx
- */
-ArraySet.prototype.at = function ArraySet_at(aIdx) {
-  if (aIdx >= 0 && aIdx < this._array.length) {
-    return this._array[aIdx];
+  /**
+   * What is the element at the given index?
+   *
+   * @param Number aIdx
+   */
+  at(aIdx) {
+    if (aIdx >= 0 && aIdx < this._array.length) {
+      return this._array[aIdx];
+    }
+    throw new Error("No element indexed by " + aIdx);
   }
-  throw new Error('No element indexed by ' + aIdx);
-};
-
-/**
- * Returns the array representation of this set (which has the proper indices
- * indicated by indexOf). Note that this is a copy of the internal array used
- * for storing the members so that no one can mess with internal state.
- */
-ArraySet.prototype.toArray = function ArraySet_toArray() {
-  return this._array.slice();
-};
 
+  /**
+   * Returns the array representation of this set (which has the proper indices
+   * indicated by indexOf). Note that this is a copy of the internal array used
+   * for storing the members so that no one can mess with internal state.
+   */
+  toArray() {
+    return this._array.slice();
+  }
+}
 exports.ArraySet = ArraySet;