Add HTML encode/decode methods

lib/utils/common.js

@@ -1,6 +1,7 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+const htmlentities = require('htmlentities')
 const jsesc = require('jsesc')
 const utils = require('../utils')
 
@@ -72,6 +73,24 @@ class common extends utils {
     }
   }
 
+  /**
+   * Escape special characters using HTML entities
+   * @param {string} str
+   * @returns {string}
+   */
+  static htmlEncode (str) {
+    return htmlentities.encode(str)
+  }
+
+  /**
+   * Remove HTML entities from string
+   * @param {string} str
+   * @returns {string}
+   */
+  static htmlDencode (str) {
+    return htmlentities.decode(str)
+  }
+
   /**
    * Remove duplicate items from a list
    * @param {Array} list

package.json

@@ -79,6 +79,7 @@
     "webpack-cli": "^3.1.0"
   },
   "dependencies": {
+    "htmlentities": "^1.0.0",
     "jsesc": "^2.5.1"
   }
 }