feat: add builder versions to module.json

resolves #18

src/commands/build.ts

@@ -1,14 +1,16 @@
 import { existsSync, promises as fsp } from 'node:fs'
 import { pathToFileURL } from 'node:url'
 import { dirname, resolve } from 'pathe'
-import { readTSConfig } from 'pkg-types'
+import { readPackageJSON, readTSConfig } from 'pkg-types'
 import type { TSConfig } from 'pkg-types'
 import { defu } from 'defu'
 import { consola } from 'consola'
 import type { ModuleMeta, NuxtModule } from '@nuxt/schema'
 import { findExports } from 'mlly'
 import { defineCommand } from 'citty'
 
+import { name, version } from '../../package.json'
+
 export default defineCommand({
   meta: {
     name: 'build',
@@ -107,6 +109,12 @@ export default defineCommand({
             }
           }
 
+          // Add module builder metadata
+          moduleMeta.builder = {
+            [name]: version,
+            'unbuild': await readPackageJSON('unbuild').then(r => r.version).catch(() => 'unknown'),
+          }
+
           // Write meta
           const metaFile = resolve(ctx.options.outDir, 'module.json')
           await fsp.writeFile(metaFile, JSON.stringify(moduleMeta, null, 2), 'utf8')

test/build.spec.ts

@@ -2,7 +2,9 @@ import { fileURLToPath } from 'node:url'
 import { readFile, readdir } from 'node:fs/promises'
 import { beforeAll, describe, it, expect } from 'vitest'
 import { execaCommand } from 'execa'
+import { readPackageJSON } from 'pkg-types'
 import { join } from 'pathe'
+import { version } from '../package.json'
 
 describe('module builder', () => {
   const rootDir = fileURLToPath(new URL('../example', import.meta.url))
@@ -75,13 +77,18 @@ describe('module builder', () => {
 
   it('should generate module metadata as separate JSON file', async () => {
     const meta = await readFile(join(distDir, 'module.json'), 'utf-8')
-    expect(JSON.parse(meta)).toMatchInlineSnapshot(`
+    const unbuildPkg = await readPackageJSON('unbuild')
+    expect(JSON.parse(meta)).toMatchObject(
       {
+        "builder": {
+          "@nuxt/module-builder": version,
+          "unbuild": unbuildPkg.version,
+        },
         "configKey": "myModule",
         "name": "my-module",
         "version": "1.0.0",
       }
-    `)
+    )
   })
 
   it('should generate typed plugin', async () => {