improve newAsyncAPIDocument function

src/models/asyncapi.ts

@@ -4,25 +4,21 @@ import { AsyncAPIDocumentV3 } from "./v3";
 import type { InfoInterface } from "./info";
 import type { BaseModel } from "./base";
 import type { ExtensionsMixinInterface } from "./mixins";
+import type { DetailedAsyncAPI } from "../types";
 
 export interface AsyncAPIDocumentInterface extends BaseModel, ExtensionsMixinInterface {
   version(): string;
   info(): InfoInterface;
 }
 
-export function newAsyncAPIDocument(json: Record<string, any>): AsyncAPIDocumentInterface {
-  const version = json['asyncapi']; // Maybe this should be an arg.
-  if (version == undefined || version == null || version == '') {
-    throw new Error('Missing AsyncAPI version in document');
-  }
-
-  const major = version.split(".")[0];
-  switch (major) {
-    case '2':
-      return new AsyncAPIDocumentV2(json, { parent: null, asyncapi: json as any, pointer: '/' });
-    case '3':
-      return new AsyncAPIDocumentV3(json, { parent: null, asyncapi: json as any, pointer: '/' });
+export function newAsyncAPIDocument(document: DetailedAsyncAPI): AsyncAPIDocumentInterface {
+  const majorVersion = document.semver.major;
+  switch (majorVersion) {
+    case 2:
+      return new AsyncAPIDocumentV2(document.parsed, { parent: null, asyncapi: document, pointer: '/' });
+    case 3:
+      return new AsyncAPIDocumentV3(document.parsed, { parent: null, asyncapi: document, pointer: '/' });
     default:
-      throw new Error(`Unsupported version: ${version}`);
+      throw new Error(`Unsupported AsyncAPI version: ${majorVersion}`);
   }
 }

src/parse.ts

@@ -47,7 +47,7 @@ export async function parse(asyncapi: ParserInput, options?: ParseOptions): Prom
 
     const detailed = createDetailedAsyncAPI(asyncapi as string | Record<string, unknown>, parsed);
     await customOperations(detailed, options);
-    const parsedDoc = newAsyncAPIDocument(parsed);
+    const parsedDoc = newAsyncAPIDocument(detailed);
 
     return { 
       source: asyncapi,