fix: esm bundle

Author: antfu

package.json

@@ -53,8 +53,8 @@
     "*.d.ts"
   ],
   "scripts": {
-    "build": "tsup \"src/*.ts\" --format cjs,esm --clean --target esnext --dts --splitting && esno scripts/postbuild.ts",
-    "dev": "tsup \"src/*.ts\" --watch src",
+    "build": "tsup && esno scripts/postbuild.ts",
+    "dev": "tsup --watch src",
     "lint": "eslint \"{src,test}/**/*.ts\"",
     "lint:fix": "nr lint -- --fix",
     "play": "npm -C playground run dev",
@@ -75,12 +75,12 @@
     "htmlparser2": "^7.1.2",
     "magic-string": "^0.25.7",
     "@rollup/pluginutils": "^4.1.1",
+    "@antfu/utils": "^0.3.0",
     "unplugin": "^0.2.11"
   },
   "devDependencies": {
     "@antfu/eslint-config": "^0.9.0",
     "@antfu/ni": "^0.9.3",
-    "@antfu/utils": "^0.3.0",
     "@types/jest": "^27.0.1",
     "@types/node": "^16.9.1",
     "@vue/composition-api": "^1.1.5",
@@ -99,7 +99,12 @@
     "typescript": "^4.4.3",
     "vite": "^2.5.7"
   },
-  "optionalDependencies": {
+  "peerDependencies": {
     "pug": "^3.0.2"
+  },
+  "peerDependenciesMeta": {
+    "pug": {
+      "optional": true
+    }
   }
 }

pnpm-lock.yaml

@@ -1,9 +1,12 @@
 import { Parser as HTMLParser, ParserOptions as HTMLParserOptions } from 'htmlparser2'
-import { parse, ParserOptions } from '@babel/parser'
+import type { ParserOptions } from '@babel/parser'
+import * as babelParser from '@babel/parser'
 import { camelize, capitalize, isHTMLTag, isSVGTag, isVoidTag } from '@vue/shared'
 import { ParsedSFC, ScriptSetupTransformOptions, ScriptTagMeta } from '../types'
 import { getIdentifierUsages } from './identifiers'
 
+const { parse } = babelParser
+
 export function parseSFC(code: string, id?: string, options?: ScriptSetupTransformOptions): ParsedSFC {
   const components = new Set<string>()
   const expressions = new Set<string>()

src/core/parseSFC.ts

@@ -0,0 +1,16 @@
+import { Options } from 'tsup'
+
+const options: Options = {
+  format: [
+    'cjs',
+    'esm',
+  ],
+  clean: true,
+  splitting: true,
+  dts: true,
+  entryPoints: [
+    'src/*.ts',
+  ],
+}
+
+export default options