Avoid loading validator un-necessarily (#718)

Author: brettwillis

lib/standalone.js

@@ -3,6 +3,7 @@
 function buildStandaloneCode (contextFunc, context, serializer, validator) {
   let ajvDependencyCode = ''
   if (context.validatorSchemasIds.size > 0) {
+    ajvDependencyCode += 'const Validator = require(\'fast-json-stringify/lib/validator\')\n'
     ajvDependencyCode += `const validatorState = ${JSON.stringify(validator.getState())}\n`
     ajvDependencyCode += 'const validator = Validator.restoreFromState(validatorState)\n'
   } else {
@@ -11,10 +12,8 @@ function buildStandaloneCode (contextFunc, context, serializer, validator) {
 
   return `
   'use strict'
-  const { dependencies } = require('fast-json-stringify/lib/standalone')
-
-  const { Serializer, Validator } = dependencies
 
+  const Serializer = require('fast-json-stringify/lib/serializer')
   const serializerState = ${JSON.stringify(serializer.getState())}
   const serializer = Serializer.restoreFromState(serializerState)