fix(parse): solve remote and circular references

Swagger-parser resolves circular references with Object references. PathsParser does not handle this case and will result in an infinite loop.

fix(ajv-openapi)!: remove draft-04 support

To solve an error importing AJV when OpenAPI Mocker is used as API from another application, that is using higher versions of AJV
Error: Cannot find module 'ajv/lib/refs/json-schema-draft-04.json'
Require stack:
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/ajv-openapi/index.js
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/open-api-mocker/lib/schema-validator/index.js
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/open-api-mocker/lib/paths/path.js
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/open-api-mocker/lib/paths/parser.js
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/open-api-mocker/lib/paths/index.js
[private-path]/[app-using-open-api-mocker-with-higher-ajv-version]/node_modules/open-api-mocker/lib/open-api-mocker.js

lib/open-api-mocker.js

@@ -1,7 +1,8 @@
 'use strict';
 
-const jsonRefs = require('json-refs');
+const SwaggerParser = require('@apidevtools/swagger-parser');
 
+const { replaceCircularObject } = require('replace-circular-object');
 const { Parser: OpenApiParser } = require('./openapi');
 const { Parser: ServersParser } = require('./servers');
 const { Parser: PathsParser } = require('./paths');
@@ -41,16 +42,16 @@ class OpenApiMocker {
  this.schema = await this.schema;
 
  try {
- const parsedSchemas = await jsonRefs.resolveRefs(this.schema);
-
- this.schema = parsedSchemas.resolved;
+ this.schema = await SwaggerParser.validate(this.schema);
 
  const openApiParser = new OpenApiParser();
  const openapi = openApiParser.parse(this.schema);
 
  const serversParser = new ServersParser();
  const servers = serversParser.parse(this.schema);
 
+ this.schema = replaceCircularObject(this.schema);
+
  const pathsParser = new PathsParser();
  const paths = pathsParser.parse(this.schema);
 

lib/schema-validator/index.js

@@ -13,7 +13,7 @@ const ajvOptions = {
 };
 
 const openApiOptions = {
- useDraft04: true
+ useDraft04: false
 };
 
 const ajv = openApi(