refactor!: remove jest condition (#14544)

Author: sxzz

packages/vite/src/node/ssr/ssrModuleLoader.ts

@@ -2,12 +2,7 @@ import path from 'node:path'
 import { pathToFileURL } from 'node:url'
 import colors from 'picocolors'
 import type { ViteDevServer } from '../server'
-import {
-  dynamicImport,
-  isBuiltin,
-  unwrapId,
-  usingDynamicImport,
-} from '../utils'
+import { dynamicImport, isBuiltin, unwrapId } from '../utils'
 import { transformRequest } from '../server/transformRequest'
 import type { InternalResolveOptionsWithOverrideConditions } from '../plugins/resolve'
 import { tryNodeResolve } from '../plugins/resolve'
@@ -278,12 +273,7 @@ async function nodeImport(
     const resolved = tryNodeResolve(
       id,
       importer,
-      // Non-external modules can import ESM-only modules, but only outside
-      // of test runs, because we use Node `require` in Jest to avoid segfault.
-      // @ts-expect-error jest only exists when running Jest
-      typeof jest === 'undefined'
-        ? { ...resolveOptions, tryEsmOnly: true }
-        : resolveOptions,
+      { ...resolveOptions, tryEsmOnly: true },
       false,
       undefined,
       true,
@@ -295,10 +285,7 @@ async function nodeImport(
       err.code = 'ERR_MODULE_NOT_FOUND'
       throw err
     }
-    url = resolved.id
-    if (usingDynamicImport) {
-      url = pathToFileURL(url).toString()
-    }
+    url = pathToFileURL(resolved.id).toString()
   }
 
   const mod = await dynamicImport(url)

packages/vite/src/node/utils.ts

@@ -955,21 +955,12 @@ export const multilineCommentsRE = /\/\*[^*]*\*+(?:[^/*][^*]*\*+)*\//g
 export const singlelineCommentsRE = /\/\/.*/g
 export const requestQuerySplitRE = /\?(?!.*[/|}])/
 
-// @ts-expect-error jest only exists when running Jest
-export const usingDynamicImport = typeof jest === 'undefined'
-
 /**
  * Dynamically import files. It will make sure it's not being compiled away by TS/Rollup.
  *
- * As a temporary workaround for Jest's lack of stable ESM support, we fallback to require
- * if we're in a Jest environment.
- * See https://github.com/vitejs/vite/pull/5197#issuecomment-938054077
- *
  * @param file File path to import.
  */
-export const dynamicImport = usingDynamicImport
-  ? new Function('file', 'return import(file)')
-  : _require
+export const dynamicImport = new Function('file', 'return import(file)')
 
 export function parseRequest(id: string): Record<string, string> | null {
   const [_, search] = id.split(requestQuerySplitRE, 2)

playground/ssr-deps/__tests__/ssr-deps.spec.ts

@@ -6,9 +6,6 @@ const url = `http://localhost:${port}`
 
 /**
  * test for #5809
- *
- * NOTE: This test will always succeed now, unless the temporary workaround for Jest can be removed
- * See https://github.com/vitejs/vite/pull/5197#issuecomment-938054077
  */
 test('msg should be encrypted', async () => {
   await page.goto(url)