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 run just fine when we do ts-node src/Sum.test.ts BUT if we call the jest by npx jest src/Sum.test.ts

({“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;
}

Any help would be appreciated.