fix: add v2-specific root properties to sorting alg

src/util.ts

@@ -140,14 +140,16 @@ export async function mergeIntoBaseFile(
 }
 
 // Purely decorative stuff, just to bring the order of the AsyncAPI Document's
-// properties into a familiar form.
+// root properties into a familiar form.
 export function orderPropsAccToAsyncAPISpec(
   inputAsyncAPIObject: any
 ): AsyncAPIObject {
   const orderOfPropsAccToAsyncAPISpec = [
     'asyncapi',
     'id',
     'info',
+    'tags', // v2-specific root property
+    'externalDocs', // v2-specific root property
     'defaultContentType',
     'servers',
     'channels',
@@ -156,7 +158,21 @@ export function orderPropsAccToAsyncAPISpec(
   ];
 
   const outputAsyncAPIObject: any = {};
+  let i = 0;
+
+  // Making the best guess where root properties that are not specified in the
+  // AsyncAPI Specification were located in the original AsyncAPI Document
+  // (inserting them between known root properties.)
+  // DISCLAIMER: The original order is not guaranteed, it is only an
+  // extrapolating guess.
+  for (const key of Object.keys(inputAsyncAPIObject)) {
+    if (!orderOfPropsAccToAsyncAPISpec.includes(key)) {
+      orderOfPropsAccToAsyncAPISpec.splice(i, 0, key);
+    }
+    i++;
+  }
 
+  // Merging of known AsyncAPI Object root properties in a familiar order.
   for (const prop of orderOfPropsAccToAsyncAPISpec) {
     if (inputAsyncAPIObject[`${prop}`]) {
       outputAsyncAPIObject[`${prop}`] = structuredClone(

tests/gh-185.yaml

@@ -0,0 +1,48 @@
+asyncapi: '2.0.0'
+x-company-attr-1: attr-value-1
+x-company-attr-2: attr-value-2
+id: 'urn:rpc:example:server'
+defaultContentType: application/json
+
+info:
+  title: RPC Server Example
+  description: This example demonstrates how to define an RPC server.
+  version: '1.0.0'
+  x-company-version: 1.2.3
+
+tags:
+  - name: my-tag
+    description: tag description
+
+channels:
+  '{queue}':
+    parameters:
+      queue:
+        schema:
+          type: string
+          pattern: '^amq\\.gen\\-.+$'
+    bindings:
+      amqp:
+        is: queue
+        queue:
+          exclusive: true
+    subscribe:
+      operationId: sendSumResult
+      bindings:
+        amqp:
+          ack: true
+      message:
+        correlationId:
+          location: $message.header#/correlation_id
+        payload:
+          type: object
+          properties:
+            result:
+              type: number
+              examples:
+                - 7
+
+servers:
+  production:
+    url: rabbitmq.example.org
+    protocol: amqp

tests/lib/index.spec.ts

@@ -84,7 +84,7 @@ describe('[integration testing] bundler should ', () => {
   });
 
   test('should be able to bundle specification files in subdirectories and merge them into the base file', async () => {
-    const object = {
+    const resultingObject = {
       asyncapi: '3.0.0',
       info: {
         title: 'Streetlights MQTT API',
@@ -306,7 +306,85 @@ describe('[integration testing] bundler should ', () => {
       noValidation: true,
     });
 
-    expect(document.json()).toMatchObject(object);
+    expect(document.json()).toMatchObject(resultingObject);
+  });
+
+  test('should be able to bundle v2 YAML, leaving `x-` properties intact and sorting root props according to AsyncAPI Spec', async () => {
+    const resultingObject = {
+      asyncapi: '2.0.0',
+      'x-company-attr-1': 'attr-value-1',
+      'x-company-attr-2': 'attr-value-2',
+      id: 'urn:rpc:example:server',
+      defaultContentType: 'application/json',
+      info: {
+        title: 'RPC Server Example',
+        description: 'This example demonstrates how to define an RPC server.',
+        version: '1.0.0',
+        'x-company-version': '1.2.3',
+      },
+      tags: [
+        {
+          name: 'my-tag',
+          description: 'tag description',
+        },
+      ],
+      servers: {
+        production: {
+          url: 'rabbitmq.example.org',
+          protocol: 'amqp',
+        },
+      },
+      channels: {
+        '{queue}': {
+          parameters: {
+            queue: {
+              schema: {
+                type: 'string',
+                pattern: '^amq\\\\.gen\\\\-.+$',
+              },
+            },
+          },
+          bindings: {
+            amqp: {
+              is: 'queue',
+              queue: {
+                exclusive: true,
+              },
+            },
+          },
+          subscribe: {
+            operationId: 'sendSumResult',
+            bindings: {
+              amqp: {
+                ack: true,
+              },
+            },
+            message: {
+              correlationId: {
+                location: '$message.header#/correlation_id',
+              },
+              payload: {
+                type: 'object',
+                properties: {
+                  result: {
+                    type: 'number',
+                    examples: [7],
+                  },
+                },
+              },
+            },
+          },
+        },
+      },
+    };
+
+    const files = 'tests/gh-185.yaml';
+
+    const document = await bundle(files, {
+      noValidation: true,
+    });
+
+    expect(document.json()).toMatchObject(resultingObject);
   });
 });