We are using TypeScript in Node.js.

We have a file called Sum.test.ts that has this code

import { sum } from "./Sum"

This code runs just fine when we do ts-node src/Sum.test.ts, but if we call Jest by npx jest src/Sum.test.ts:
“Ň
({“Object.”:function(module,exports,require,__dirname,__filename,jest){import
{ sum } from “./Sum”;
^^^^^^ SyntaxError: Cannot use import statement outside a module

This is the `Sum.ts` file:

    export function sum(a: number, b: number): number {
        return a + b;
    }