feat!: add meta to json output (#5802)

docs/advanced/metadata.md

@@ -48,7 +48,7 @@ Vitest uses different methods to communicate with the Node.js process.
 - If Vitest uses child process, the data will be send as a serialized Buffer via [`process.send`](https://nodejs.org/api/process.html#processsendmessage-sendhandle-options-callback) API
 - If Vitest runs tests in the browser, the data will be stringified using [flatted](https://www.npmjs.com/package/flatted) package
 
-The general rule of thumb is that you can send almost anything, except for functions, Promises, regexp (`v8.stringify` cannot serialize it, but you can send a string version and parse it in the Node.js process yourself), and other non-serializable data, but you can have cyclic references inside.
+This property is also present on every test in the `json` reporter, so make sure that data can be serialized into JSON.
 
 Also, make sure you serialize [Error properties](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm#error_types) before you set them.
 :::

packages/vitest/src/node/reporters/json.ts

@@ -1,7 +1,7 @@
 import { existsSync, promises as fs } from 'node:fs'
 import { dirname, resolve } from 'pathe'
 import type { Vitest } from '../../node'
-import type { File, Reporter, SnapshotSummary, Suite, TaskState } from '../../types'
+import type { File, Reporter, SnapshotSummary, Suite, TaskMeta, TaskState } from '../../types'
 import { getSuites, getTests } from '../../utils'
 import { getOutputFile } from '../../utils/config-helpers'
 
@@ -30,6 +30,7 @@ export interface JsonAssertionResult {
   fullName: string
   status: Status
   title: string
+  meta: TaskMeta
   duration?: Milliseconds | null
   failureMessages: Array<string> | null
   location?: Callsite | null
@@ -123,6 +124,7 @@ export class JsonReporter implements Reporter {
           duration: t.result?.duration,
           failureMessages: t.result?.errors?.map(e => e.stack || e.message) || [],
           location: t.location,
+          meta: t.meta,
         } satisfies JsonAssertionResult
       })
 

test/reporters/tests/__snapshots__/json.test.ts.snap

@@ -12,6 +12,7 @@ exports[`json reporter > generates correct report 1`] = `
     "column": 1,
     "line": 5,
   },
+  "meta": {},
   "status": "failed",
   "title": "should fail",
 }