Typescript plugin 4.0.0 Error: Unexpected token (Note that you need plugins to import files that are not JavaScript)

• Rollup Plugin Name: typescript
• Rollup Plugin Version: 4.0.0
• Rollup Version: 2.2.0
• Operating System (or Browser): macOsx
• Node Version: 10.16.3

How Do We Reproduce?

import tsPlugin from '@rollup/plugin-typescript';
import pkg from './package.json';

export default {
	input: 'src/index.tsx',
	output: [
		{
			file: pkg.main,
			format: 'cjs',
			sourcemap: true,
		},
		{
			file: pkg.module,
			format: 'es',
			sourcemap: true,
		},
	],
	plugins: [
		tsPlugin(),
	],
};

Expected Behavior

src/index.tsx → dist/index.js, dist/index.es.js...
created dist/index.js, dist/index.es.js in 1.1s

Actual Behavior

[!] Error: Unexpected token (Note that you need plugins to import files that are not JavaScript)
src/index.tsx (1:25)
1: export function hasan(num: number): number {
                            ^

I hope I’m doing something wrong because it is so bad to cant use ts plugin. Ts plugin version 3.0.0 works perfect by the way.