fix helper

@@ -5,7 +5,7 @@
 
 
 'use strict';
 'use strict';
 
 
-exports.if_cond = (left, operator, right, options) => {
+exports.if_cond = function(left, operator, right, options) {
     switch (operator) {
     switch (operator) {
         case '==':
         case '==':
             return (left == right) ? options.fn(this) : options.inverse(this); // eslint-disable-line
             return (left == right) ? options.fn(this) : options.inverse(this); // eslint-disable-line
@@ -30,7 +30,7 @@ exports.if_cond = (left, operator, right, options) => {
     }
     }
 };
 };
 
 
-exports.escapeType = (value) => {
+exports.escapeType = function(value) {
 
 
     let strs = value.split('');
     let strs = value.split('');
 
 
@@ -51,7 +51,7 @@ exports.escapeType = (value) => {
     return strs.join('');
     return strs.join('');
 };
 };
 
 
-exports.escapeLength = (value) => {
+exports.escapeLength = function(value) {
     let strs = value.split('');
     let strs = value.split('');
 
 
     if (strs.length === 2) {
     if (strs.length === 2) {