const code = `
    import {format} from './util/string';

    function formatName(name) {
        if (!name) return 'no-name';

        return format(name);
    }

    class Animal {
        constructor(breed) {
            this.breed = breed;
        }

        getBreed() {
            return this.breed;
        }

        setName(name) {
            if (this.nameExist()) {
                return;
            }

            this.name = name;
        }
    }

    class Man extends Animal {
       sayName() {
            console.log('name', this.name);
       }
    }

    export default Man;
`;
