fix: do not include symbols in js-travers

This commit sets `includeSymbols` to false,
resulting in not throwing when calling
RegExp.exec on them.

Closes #180

Signed-off-by: Martin Pražák <martin.prazak@lutherone.com>

Author: MartyJRE

lib/experimental/json-schema-discovery.js

@@ -18,7 +18,7 @@ exports.discoverModelDefinitions = discoverModelDefinitions;
 function discoverModelDefinitions(json, options) {
   const schemas = [];
   const stack = [];
-  const result = traverse(json).forEach(function(item) {
+  const result = traverse(json, {includeSymbols: false}).forEach(function(item) {
     let type = typeof item;
 
     if (Array.isArray(item)) {

lib/template.js

@@ -40,7 +40,7 @@ JsonTemplate.prototype.compile = function() {
     return this.schema;
   }
   const schema = {};
-  traverse(this.template).reduce(function(schema, item) {
+  traverse(this.template, {includeSymbols: false}).reduce(function(schema, item) {
     const key = this.key;
     const root = this.path[0];
     let match = null;
@@ -118,7 +118,7 @@ JsonTemplate.prototype.build = function(parameters) {
   this.compile();
 
   function transform(obj) {
-    return traverse(obj).map(function(item) {
+    return traverse(obj, {includeSymbols: false}).map(function(item) {
       const ctx = this;
       const templates = /\{(([\!\^]?[a-zA-Z\$_][\w\$]*)\s*(=([^:\{\}]+))?(:(\w+))?)\}/g;
       function build(item) {