feat: add lerna workspace support to searchForWorkspaceRoot (#6270)

docs/config/index.md

@@ -592,6 +592,7 @@ createServer()
 
   - contains `workspaces` field in `package.json`
   - contains one of the following file
+    - `lerna.json`
     - `pnpm-workspace.yaml`
 
   Accepts a path to specify the custom workspace root. Could be a absolute path or a path relative to [project root](/guide/#index-html-and-project-root). For example:

packages/vite/src/node/server/__tests__/fixtures/lerna/nested/package.json

@@ -0,0 +1,3 @@
+{
+  "private": true
+}

packages/vite/src/node/server/__tests__/search-root.spec.ts

@@ -2,6 +2,13 @@ import { searchForWorkspaceRoot } from '../searchRoot'
 import { resolve } from 'path'
 
 describe('searchForWorkspaceRoot', () => {
+  test('lerna', () => {
+    const resolved = searchForWorkspaceRoot(
+      resolve(__dirname, 'fixtures/lerna/nested')
+    )
+    expect(resolved).toBe(resolve(__dirname, 'fixtures/lerna'))
+  })
+
   test('pnpm', () => {
     const resolved = searchForWorkspaceRoot(
       resolve(__dirname, 'fixtures/pnpm/nested')

packages/vite/src/node/server/searchRoot.ts

@@ -8,14 +8,17 @@ const ROOT_FILES = [
   // '.git',
 
   // https://pnpm.js.org/workspaces/
-  'pnpm-workspace.yaml'
+  'pnpm-workspace.yaml',
 
   // https://rushjs.io/pages/advanced/config_files/
   // 'rush.json',
 
   // https://nx.dev/latest/react/getting-started/nx-setup
   // 'workspace.json',
-  // 'nx.json'
+  // 'nx.json',
+
+  // https://github.com/lerna/lerna#lernajson
+  'lerna.json'
 ]
 
 // npm: https://docs.npmjs.com/cli/v7/using-npm/workspaces#installing-workspaces