> hello.mts
```ts
export function hello() {
return "hello";
}
> swc-node main.mts
(node:16280) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
(Use `node --trace-warnings ...` to show where the warning was created)
import{hello}from"./hello.mjs";console.log(hello());
^^^^^^
SyntaxError: Cannot use import statement outside a module
console.log(hello());