typescript类型声明文件

import { minus } from '@/views/test/Ts/dtsdemo';
console.log('minus', minus(1, 2));
console.log('minus(\'1\', 2)', minus('1', 2));

//dtsdemo.js
export const minus = (a, b) => {
  return a - b;
};

//dtsdemo.d.ts
declare function minus(a: number, b: number): number;
export { minus };