I have a mocha test with many imports , those imports make the test time very long (I tried a dummy test without any imports and it took only few seconds)

Here is the structure of my test - TestSpeed.test.js

import {expect} from 'chai';
// many other imports ..

describe('Test Speed', () => {

    it('Test Speed 1 equals to 1', () => {
        expect(1).to.eql(1);
    });
});

And I'm running it with the command - node mocha TestSpeed.test.js.

Is there any way to keep those imports in a cache and make the test faster? Any other idea how to make the test faster would be acceptable too.