feat: use fix-dts-default-cjs-exports to transform CJS types (egois…

…t#1310)

package.json

@@ -58,6 +58,7 @@
     "consola": "^3.4.0",
     "debug": "^4.4.0",
     "esbuild": "^0.25.0",
+    "fix-dts-default-cjs-exports": "^1.0.0",
     "joycon": "^3.1.1",
     "picocolors": "^1.1.1",
     "postcss-load-config": "^6.0.1",

src/rollup.ts

@@ -11,6 +11,7 @@ import { getProductionDeps, loadPkg } from './load'
 import { reportSize } from './lib/report-size'
 import type { NormalizedOptions } from './'
 import type { InputOptions, OutputOptions, Plugin } from 'rollup'
+import { FixDtsDefaultCjsExportsPlugin } from 'fix-dts-default-cjs-exports/rollup'
 
 const logger = createLogger()
 
@@ -89,25 +90,6 @@ const getRollupConfig = async (
     },
   }
 
-  const fixCjsExport: Plugin = {
-    name: 'tsup:fix-cjs-export',
-    renderChunk(code, info) {
-      if (
-        info.type !== 'chunk' ||
-        !/\.(ts|cts)$/.test(info.fileName) ||
-        !info.isEntry ||
-        info.exports?.length !== 1 ||
-        info.exports[0] !== 'default'
-      )
-        return
-
-      return code.replace(
-        /(?<=(?<=[;}]|^)\s*export\s*){\s*([\w$]+)\s*as\s+default\s*}/,
-        `= $1`,
-      )
-    },
-  }
-
   return {
     inputConfig: {
       input: dtsOptions.entry,
@@ -167,7 +149,7 @@ const getRollupConfig = async (
         entryFileNames: `[name]${outputExtension}`,
         chunkFileNames: `[name]-[hash]${outputExtension}`,
         plugins: [
-          format === 'cjs' && options.cjsInterop && fixCjsExport,
+          format === 'cjs' && options.cjsInterop && FixDtsDefaultCjsExportsPlugin(),
         ].filter(Boolean),
       }
     }),