Change methods to helper methods

browser/lib/htmlTextHelper.js

@@ -0,0 +1,44 @@
+/**
+ * @fileoverview Text trimmer for html.
+ */
+
+/**
+ * @param {string} text
+ * @return {string}
+ */
+
+export function decodeEntities (text) {
+  var entities = [
+    ['apos', '\''],
+    ['amp', '&'],
+    ['lt', '<'],
+    ['gt', '>'],
+    ['#63', '\\?']
+  ]
+
+  for (var i = 0, max = entities.length; i < max; ++i) {
+    text = text.replace(new RegExp(`&${entities[i][0]};`, 'g'), entities[i][1])
+  }
+
+  return text
+}
+
+export function encodeEntities (text) {
+  const entities = [
+    ['\'', 'apos'],
+    ['&', 'amp'],
+    ['<', 'lt'],
+    ['>', 'gt'],
+    ['\\?', '#63']
+  ]
+
+  entities.forEach((entity) => {
+    text = text.replace(new RegExp(entity[0], 'g'), `&${entity[1]};`)
+  })
+  return text
+}
+
+export default {
+  decodeEntities,
+  encodeEntities,
+}