fix: support for define global constants (#743)

packages/vite-node/src/cli.ts

@@ -84,6 +84,9 @@ async function run(options: CliOptions = {}) {
     },
   })
 
+  // provide the vite define variable in this context
+  await runner.executeId('/@vite/env')
+
   for (const file of files)
     await runner.executeFile(file)
 

packages/vitest/src/node/execute.ts

@@ -14,6 +14,9 @@ export interface ExecuteOptions extends ViteNodeRunnerOptions {
 export async function executeInViteNode(options: ExecuteOptions) {
   const runner = new VitestRunner(options)
 
+  // provide the vite define variable in this context
+  await runner.executeId('/@vite/env')
+
   const result: any[] = []
   for (const file of options.files)
     result.push(await runner.executeFile(file))

test/coverage-test/src/Defined.vue

@@ -0,0 +1,6 @@
+<script setup lang="ts">
+const defined = MY_CONSTANT
+</script>
+<template>
+  {{ defined }}
+</template>

test/coverage-test/test/vue.test.ts

@@ -5,6 +5,7 @@
 import { expect, test } from 'vitest'
 import { mount } from '@vue/test-utils'
 import Hello from '../src/Hello.vue'
+import Defined from '../src/Defined.vue'
 
 test('vue 3 coverage', async() => {
   expect(Hello).toBeTruthy()
@@ -26,3 +27,11 @@ test('vue 3 coverage', async() => {
 
   expect(wrapper.text()).toContain('4 x 4 = 16')
 })
+
+test('define package in vm', () => {
+  expect(Defined).toBeTruthy()
+
+  const wrapper = mount(Defined)
+
+  expect(wrapper.text()).toContain(MY_CONSTANT)
+})

test/coverage-test/typings.d.ts

@@ -0,0 +1 @@
+declare const MY_CONSTANT: string

test/coverage-test/vitest.config.ts

@@ -5,6 +5,9 @@ export default defineConfig({
   plugins: [
     vue(),
   ],
+  define: {
+    MY_CONSTANT: '"my constant"',
+  },
   test: {
   },
 })