feat(@vant/cli): using esbuild to transform script (#10143)

* feat(@vant/cli): using esbuild to transform script

* chore: update babel doc

* chore: update lock

* chore: update

* fix: format

packages/vant-cli/cjs/babel.config.cjs

@@ -1,30 +0,0 @@
-module.exports = function (api, options) {
-  if (api) {
-    api.cache.never();
-  }
-
-  const { BABEL_MODULE, NODE_ENV } = process.env;
-  const isTest = NODE_ENV === 'test';
-  const useESModules = BABEL_MODULE !== 'commonjs' && !isTest;
-
-  return {
-    presets: [
-      [
-        require.resolve('@babel/preset-env'),
-        {
-          modules: useESModules ? false : 'commonjs',
-          loose: options.loose,
-        },
-      ],
-      require.resolve('@babel/preset-typescript'),
-    ],
-    plugins: [
-      [
-        require.resolve('@vue/babel-plugin-jsx'),
-        {
-          enableObjectSlots: options.enableObjectSlots,
-        },
-      ],
-    ],
-  };
-};

packages/vant-cli/docs/config.md

@@ -21,8 +21,6 @@
     - [site.simulator.url](#sitesimulatorurl)
     - [site.htmlMeta](#sitehtmlmeta)
     - [site.enableVConsole](#siteenablevconsole)
-  - [Babel](#babel)
-    - [默认配置](#----)
   - [Postcss](#postcss)
     - [默认配置](#-----1)
   - [browserslist](#browserslist)
@@ -337,29 +335,6 @@ module.exports = {
 
 是否在 dev 时开启 [vConsole](https://github.com/Tencent/vConsole) 调试，用于移动端 debug。
 
-## Babel
-
-通过根目录下的`babel.config.js`文件可以对 Babel 进行配置。
-
-### 默认配置
-
-推荐使用`vant-cli`内置的 preset，配置如下：
-
-```js
-module.exports = {
-  presets: ['@vant/cli/preset'],
-};
-```
-
-`@vant/cli/preset`中默认包含了以下插件：
-
-- @babel/preset-env（不含 core-js）
-- @babel/preset-typescript
-- @babel/plugin-transform-object-assign
-- @babel/plugin-proposal-optional-chaining
-- @babel/plugin-proposal-nullish-coalescing-operator
-- @vue/babel-preset-jsx
-
 ## Postcss
 
 通过根目录下的`postcss.config.js`文件可以对 Postcss 进行配置。
@@ -378,7 +353,7 @@ module.exports = {
 
 ## browserslist
 
-推荐在`package.json`文件里添加 browserslist 字段，这个值会被`@babel/preset-env`和`autoprefixer`用来确定目标浏览器的版本，保证编译后代码的兼容性。
+推荐在 `package.json` 文件里添加 browserslist 字段，这个值会被 `autoprefixer` 用来确定目标浏览器的版本，保证编译后代码的兼容性。
 
 在移动端浏览器中使用，可以添加如下配置：
 

packages/vant-cli/docs/directory.md

@@ -14,7 +14,6 @@ project
 │   ├─ home.md       # 文档首页
 │   └─ changelog.md  # 更新日志
 │
-├─ babel.config.js    # Babel 配置文件
 ├─ vant.config.mjs    # Vant Cli 配置文件
 ├─ package.json
 └─ README.md

packages/vant-cli/package.json

@@ -21,8 +21,7 @@
     "cjs",
     "site",
     "template",
-    "bin.js",
-    "preset.cjs"
+    "bin.js"
   ],
   "keywords": [
     "vant"
@@ -49,7 +48,6 @@
   },
   "dependencies": {
     "@babel/core": "^7.16.0",
-    "@babel/preset-env": "^7.16.0",
     "@babel/preset-typescript": "^7.16.0",
     "@docsearch/css": "3.0.0-alpha.41",
     "@docsearch/js": "3.0.0-alpha.41",

packages/vant-cli/preset.cjs

@@ -1,3 +0,0 @@
-const babelConfig = require('./cjs/babel.config.cjs');
-
-module.exports = (api, options) => babelConfig(api, options);

packages/vant-cli/src/commands/build.ts

@@ -1,6 +1,6 @@
+import fse from 'fs-extra';
 import execa from 'execa';
 import { join, relative } from 'path';
-import fse from 'fs-extra';
 import { clean } from './clean.js';
 import { CSS_LANG } from '../common/css.js';
 import { ora, consola } from '../common/logger.js';
@@ -27,12 +27,13 @@ import {
   setModuleEnv,
   setBuildTarget,
 } from '../common/index.js';
+import type { Format } from 'esbuild';
 
 const { remove, copy, readdir, existsSync } = fse;
 
-async function compileFile(filePath: string) {
+async function compileFile(filePath: string, format: Format) {
   if (isScript(filePath)) {
-    return compileScript(filePath);
+    return compileScript(filePath, format);
   }
   if (isStyle(filePath)) {
     return compileStyle(filePath);
@@ -69,12 +70,14 @@ async function preCompileDir(dir: string) {
   );
 }
 
-async function compileDir(dir: string) {
+async function compileDir(dir: string, format: Format) {
   const files = await readdir(dir);
   await Promise.all(
     files.map((filename) => {
       const filePath = join(dir, filename);
-      return isDir(filePath) ? compileDir(filePath) : compileFile(filePath);
+      return isDir(filePath)
+        ? compileDir(filePath, format)
+        : compileFile(filePath, format);
     })
   );
 }
@@ -86,13 +89,13 @@ async function copySourceCode() {
 async function buildESMOutputs() {
   setModuleEnv('esmodule');
   setBuildTarget('package');
-  await compileDir(ES_DIR);
+  await compileDir(ES_DIR, 'esm');
 }
 
 async function buildCJSOutputs() {
   setModuleEnv('commonjs');
   setBuildTarget('package');
-  await compileDir(LIB_DIR);
+  await compileDir(LIB_DIR, 'cjs');
 }
 
 async function buildTypeDeclarations() {

packages/vant-cli/src/common/index.ts

@@ -14,6 +14,7 @@ export const TEST_REGEXP = new RegExp('\\' + sep + 'test$');
 export const ASSET_REGEXP = /\.(png|jpe?g|gif|webp|ico|jfif|svg|woff2?|ttf)$/i;
 export const STYLE_REGEXP = /\.(css|less|scss)$/;
 export const SCRIPT_REGEXP = /\.(js|ts|jsx|tsx)$/;
+export const JSX_REGEXP = /\.(j|t)sx$/;
 export const ENTRY_EXTS = ['js', 'ts', 'tsx', 'jsx', 'vue'];
 
 export function removeExt(path: string) {
@@ -46,33 +47,14 @@ export function getComponents() {
     );
 }
 
-export function isDir(dir: string) {
-  return lstatSync(dir).isDirectory();
-}
-
-export function isDemoDir(dir: string) {
-  return DEMO_REGEXP.test(dir);
-}
-
-export function isTestDir(dir: string) {
-  return TEST_REGEXP.test(dir);
-}
-
-export function isAsset(path: string) {
-  return ASSET_REGEXP.test(path);
-}
-
-export function isSfc(path: string) {
-  return SFC_REGEXP.test(path);
-}
-
-export function isStyle(path: string) {
-  return STYLE_REGEXP.test(path);
-}
-
-export function isScript(path: string) {
-  return SCRIPT_REGEXP.test(path);
-}
+export const isDir = (dir: string) => lstatSync(dir).isDirectory();
+export const isDemoDir = (dir: string) => DEMO_REGEXP.test(dir);
+export const isTestDir = (dir: string) => TEST_REGEXP.test(dir);
+export const isAsset = (path: string) => ASSET_REGEXP.test(path);
+export const isSfc = (path: string) => SFC_REGEXP.test(path);
+export const isStyle = (path: string) => STYLE_REGEXP.test(path);
+export const isScript = (path: string) => SCRIPT_REGEXP.test(path);
+export const isJsx = (path: string) => JSX_REGEXP.test(path);
 
 const camelizeRE = /-(\w)/g;
 const pascalizeRE = /(\w)(\w*)/g;

packages/vant-cli/src/compiler/compile-script.ts

@@ -1,16 +1,18 @@
 import fse from 'fs-extra';
+import babel from '@babel/core';
+import esbuild, { type Format } from 'esbuild';
 import { sep } from 'path';
-import { transformAsync } from '@babel/core';
-import { replaceExt } from '../common/index.js';
+import { isJsx, replaceExt } from '../common/index.js';
 import { replaceCSSImportExt } from '../common/css.js';
 import { replaceScriptImportExt } from './get-deps.js';
 
 const { readFileSync, removeSync, outputFileSync } = fse;
 
-export async function compileScript(filePath: string): Promise<void> {
-  return new Promise((resolve, reject) => {
+export async function compileScript(
+  filePath: string,
+  format: Format
+): Promise<void> {
   if (filePath.includes('.d.ts')) {
-      resolve();
     return;
   }
 
@@ -21,16 +23,34 @@ export async function compileScript(filePath: string): Promise<void> {
   }
   code = replaceScriptImportExt(code, '.vue', '');
 
-    transformAsync(code, { filename: filePath })
-      .then((result) => {
-        if (result) {
-          const jsFilePath = replaceExt(filePath, '.js');
-
-          removeSync(filePath);
-          outputFileSync(jsFilePath, result.code);
-          resolve();
-        }
-      })
-      .catch(reject);
+  if (isJsx(filePath)) {
+    const babelResult = await babel.transformAsync(code, {
+      filename: filePath,
+      babelrc: false,
+      presets: ['@babel/preset-typescript'],
+      plugins: [
+        [
+          '@vue/babel-plugin-jsx',
+          {
+            enableObjectSlots: false,
+          },
+        ],
+      ],
     });
+    if (babelResult?.code) {
+      ({ code } = babelResult);
+    }
+  }
+
+  const esbuildResult = await esbuild.transform(code, {
+    loader: 'ts',
+    target: 'es2016',
+    format,
+  });
+
+  ({ code } = esbuildResult);
+
+  const jsFilePath = replaceExt(filePath, '.js');
+  removeSync(filePath);
+  outputFileSync(jsFilePath, code);
 }

packages/vant/babel.config.js

@@ -1,11 +0,0 @@
-module.exports = {
-  presets: [
-    [
-      '@vant/cli/preset.cjs',
-      {
-        loose: process.env.BUILD_TARGET === 'package',
-        enableObjectSlots: false,
-      },
-    ],
-  ],
-};