A test for optimization of optional properties

optional.js

const a = {
    a: 1,
    b: null
};
const b = {
    a: 2,
    b: null
};
const c = {
    a: 2,
    b: 123
};
const d = {
    a: 2
};
const e = {
    a: 2,
    b: undefined
};
const f = {
    a: 2,
    b: undefined
};
const g = {
    a: 2,
    b: {
        c: 1,
        d: 2
    }
};
const h = {
    a: 2,
    b: 'hello'
};

console.log('null vs null:', %HaveSameMap(a, b));
console.log('null vs 123:', %HaveSameMap(a, c));
console.log('null vs no property:', %HaveSameMap(a, d));
console.log('null vs undefined:', %HaveSameMap(a, e));
console.log('123 vs no property:', %HaveSameMap(c, d));
console.log('123 vs undefined:', %HaveSameMap(c, e));
console.log('no property vs undefined:', %HaveSameMap(d, e));
console.log('undefined vs undefined:', %HaveSameMap(e, f));
console.log('number vs object:', %HaveSameMap(c, g));
console.log('undefined vs object:', %HaveSameMap(e, g));
console.log('undefined vs string:', %HaveSameMap(f, h));

%DebugPrint(a);
%DebugPrint(c);
%DebugPrint(d);
%DebugPrint(e);

let sum = 0;
function getA(obj) {
    if (obj.b) {
        sum += obj.b;
    }
}
let counter = 100000;
while (counter-- > 0) {
    getA(c);
    getA(d);
}
console.log(sum);
%DebugPrint(getA);