ObjectOperator 对比 v8 LookupIterator

let obj = {
    key1: 'value1',
    key2: 'value2',
    key3: 'value3',
    key4: 'value4',
    key5: 'value5',
    key7: {
        subkey1: 'subvalue1',
        subkey2: 'subvalue2'
    }
}

let obj1 =  {
    okey1: 'ovalue1',
    okey2: 'ovalue2',
    okey3: 'ovalue3',
}

obj1.__proto__ = obj;

let obj2 = {
    pkey1: 'pvalue1',
    pkey2: 'pvalue2', 
}

obj2.__proto__ = obj1;

let start = Date.now();
for (let i = 0; i < 1e6; i++) {
    Reflect.get(obj2, 'key1');
}
let end = Date.now();
print(end - start);