fix: mfsu should handle native module and APP_ROOT properly (umijs#6932)

packages/preset-built-in/src/plugins/features/mfsu/fixtures/getFilePath/package-json-in-approot/app/package.json

@@ -0,0 +1,3 @@
+{
+  "main": ""
+}

packages/preset-built-in/src/plugins/features/mfsu/fixtures/getFilePath/package-json-notin-approot/app/index.js

@@ -0,0 +1 @@
+module.exports = "";

packages/preset-built-in/src/plugins/features/mfsu/getFilePath.test.ts

@@ -1,6 +1,6 @@
 import { winPath } from '@umijs/utils';
 import { join } from 'path';
-import { getFilePath } from './getFilePath';
+import { getFilePath, getProperCwd } from './getFilePath';
 
 const fixtures = join(__dirname, 'fixtures', 'getFilePath');
 
@@ -9,6 +9,19 @@ function format(path: string | null) {
   return path.replace(winPath(fixtures), '$CWD$');
 }
 
+let oldAppRoot = process.env.APP_ROOT;
+let oldCwd = process.cwd();
+
+beforeEach(() => {
+  oldAppRoot = process.env.APP_ROOT;
+  oldCwd = process.cwd();
+});
+
+afterEach(() => {
+  process.env.APP_ROOT = oldAppRoot;
+  process.chdir(oldCwd);
+});
+
 test('file exists', () => {
   expect(
     format(getFilePath(join(fixtures, 'js-file-first', 'foo.js'))),
@@ -44,3 +57,19 @@ test('directory index mjs', () => {
     format(getFilePath(join(fixtures, 'directory-index-mjs', 'foo'))),
   ).toEqual(`$CWD$/directory-index-mjs/foo/index.mjs`);
 });
+
+test('cwd should be APP_ROOT', () => {
+  process.chdir(join(fixtures, 'package-json-in-approot'));
+  process.env.APP_ROOT = join(fixtures, 'package-json-in-approot', 'app');
+  expect(format(getProperCwd(process.env.APP_ROOT))).toEqual(
+    `$CWD$/package-json-in-approot/app`,
+  );
+});
+
+test('cwd should be process.cwd()', () => {
+  process.chdir(join(fixtures, 'package-json-notin-approot'));
+  process.env.APP_ROOT = join(fixtures, 'package-json-notin-approot', 'app');
+  expect(format(getProperCwd(process.env.APP_ROOT))).toEqual(
+    `$CWD$/package-json-notin-approot`,
+  );
+});

packages/preset-built-in/src/plugins/features/mfsu/getFilePath.ts

@@ -71,3 +71,15 @@ export function getFilePath(path: string) {
 
   return null;
 }
+
+// 当 APP_ROOT 有值，但 依赖(package.json) 仍然安装在 process.cwd() 时
+// 返回正常可用的 cwd
+export function getProperCwd(cwd: string) {
+  const rawCwd = process.cwd();
+  const pkgLocationWithCwd = existsSync(join(cwd, 'package.json'));
+
+  if (pkgLocationWithCwd) {
+    return cwd;
+  }
+  return rawCwd;
+}

packages/preset-built-in/src/plugins/features/mfsu/utils.ts

@@ -10,7 +10,7 @@ import {
 } from 'fs';
 import { isAbsolute, join } from 'path';
 import { getDepReExportContent } from './getDepReExportContent';
-import { getFilePath } from './getFilePath';
+import { getFilePath, getProperCwd } from './getFilePath';
 
 export const copy = (fromDir: string, toDir: string) => {
   try {
@@ -43,9 +43,20 @@ export const figureOutExport = async (
 ): Promise<string> => {
   const absImportFrom = isAbsolute(importFrom)
     ? importFrom
-    : join(cwd, 'node_modules', importFrom);
+    : join(getProperCwd(cwd), 'node_modules', importFrom);
   const filePath = getFilePath(absImportFrom);
 
+  // @ts-ignore
+  const isNodeBuiltinModule = !!process.binding('natives')[importFrom];
+
+  // useful while running with target = electron-renderer
+  if (isNodeBuiltinModule) {
+    return Promise.resolve(`
+    const _ = require('${importFrom}');
+    module.exports = _;
+    `);
+  }
+
   assert(filePath, `filePath not found of ${importFrom}`);
 
   const content = readFileSync(filePath, 'utf-8');