Use global const for defaults of the options in resolveRefs and resolveAll

Author: umeshp7

lib/deref.js

@@ -27,6 +27,13 @@ const _ = require('lodash'),
     'float',
     'double'
   ],
+  RESOLVE_REF_DEFAULTS = {
+    resolveFor: 'CONVERSION',
+    resolveTo: 'schema',
+    stack: 0,
+    stackLimit: 10,
+    isAllOf: false
+  },
   DEFAULT_SCHEMA_UTILS = require('./30XUtils/schemaUtils30X'),
   traverseUtility = require('traverse'),
   PROPERTIES_TO_ASSIGN_ON_CASCADE = ['type', 'nullable'];
@@ -96,8 +103,14 @@ module.exports = {
    * @param {*} options.stackLimit Depth to which the schema should be resolved.
    * @returns {*} schema - schema that adheres to all individual schemas in schemaArr
    */
-  resolveAllOf: function (schemaArr, parameterSourceOption, components,
-    { resolveFor = 'CONVERSION', resolveTo = 'schema', stack = 0, seenRef = {}, stackLimit = 10, analytics = {} }) {
+  resolveAllOf: function (schemaArr, parameterSourceOption, components, {
+    resolveFor = RESOLVE_REF_DEFAULTS.resolveFor,
+    resolveTo = RESOLVE_REF_DEFAULTS.resolveTo,
+    stack = RESOLVE_REF_DEFAULTS.stack,
+    seenRef = {},
+    stackLimit = RESOLVE_REF_DEFAULTS.stackLimit,
+    analytics = {}
+  }) {
 
     if (!(schemaArr instanceof Array)) {
       return null;
@@ -146,8 +159,13 @@ module.exports = {
    */
 
   resolveRefs: function (schema, parameterSourceOption, components, {
-    resolveFor = 'CONVERSION', resolveTo = 'schema', stack = 0, seenRef = {}, stackLimit = 10,
-    isAllOf = false, analytics = {}
+    resolveFor = RESOLVE_REF_DEFAULTS.resolveFor,
+    resolveTo = RESOLVE_REF_DEFAULTS.resolveTo,
+    stack = RESOLVE_REF_DEFAULTS.stack,
+    seenRef = {},
+    stackLimit = RESOLVE_REF_DEFAULTS.stackLimit,
+    isAllOf = RESOLVE_REF_DEFAULTS.isAllOf,
+    analytics = {}
   }) {
     var resolvedSchema, prop, splitRef,
       ERR_TOO_MANY_LEVELS = '<Error: Too many levels of nesting to fake this schema>';