get-script-loader.spec.ts

import getScriptLoader from './get-script-loader';
import ScriptLoader from './script-loader';

describe('getScriptLoader()', () => {
    it('returns same `ScriptLoader` instance', () => {
        const loader = getScriptLoader();
        const loader2 = getScriptLoader();

        expect(loader)
            .toBe(loader2);

        expect(loader)
            .toBeInstanceOf(ScriptLoader);
    });
});