dts file doesn't match export =

[privatenumber]

When using export = with --dts --no-splitting, the declaration file uses export default instead of export = .

Input

src/index.ts

function hello(name: string) {
	console.log(`Hello ${name}`);
}

export = hello;

package.json

{
  "scripts": {
    "build": "tsup src/index.ts --dts --no-splitting"
  },
  "devDependencies": {
    "tsup": "^4.11.2",
    "typescript": "^4.3.4"
  }
}

tsconfig.json

{
	"compilerOptions": {
		"isolatedModules": true,
		"esModuleInterop": true,
		"declaration": true,
		"outDir": "dist",
		"module": "commonjs"
	},
	"include": [
		"src"
	]
}

Output

dist/index.js

// src/index.ts
function hello(name) {
  console.log(`Hello ${name}`);
}
module.exports = hello;

dist/index.d.ts

declare function hello(name: string): void;

export default hello; // should be export = hello

[privatenumber]

I think I spoke to soon actually.

I thought it had to be export = because that's what tsc outputs, but seems Typescript handles this fine when importing it.

[privatenumber]

I'm noticing intellisense doesn't actually work when importing the module via CJS require.

But since it's TypeScript, I guess it's reasonable to expect all imports would be ESM import.

Would still be nice to have it be export = for correctness and Intellisense but no longer a blocker for me. Feel free to re-open.

[egoist]

rollup-plugin-dts doesn't support export = pattern If I recall correctly.