sorted_nonnullable_properties_interface.ts.ts

const start = performance.now();
interface Member {
    name: string;
    birthday: Date;
    url: string;
    instrument: string;
}

const john: Member = {
    name: 'John Lennon',
    birthday: new Date('1940-‎10-09'),
    url: 'www.johnlennon.com',
    instrument: '',
};
const paul: Member = {
    name: 'Paul McCartney',
    birthday: new Date('1942-06-18'),
    url: 'https://www.paulmccartney.com/',
    instrument: 'bass',
};
const george: Member = {
    name: 'George Harrison',
    birthday: new Date('1943-02-25'),
    url: 'http://www.georgeharrison.com/',
    instrument: 'guitar',
};
const ringo: Member = {
    name: 'Ringo Starr',
    birthday: new Date('1940-07-07'),
    url: 'http://www.ringostarr.com/',
    instrument: 'Drums',
};

const beatles = [john, paul, george, ringo];

for (var i = 0; i < 1000 * 1000 * 1000; i++) {
    beatles[i & 3].name;
}

const end = performance.now();

console.log(end - start);
// V8 7.9.317.31
// 1275.9350000414997
// 1279.7900000587106
// 1277.959999977611

// Firefox 69
// 47372