Run results for: Date JsonReviver3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.84 Safari/537.36

Browser: Chrome 99

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
1	40.8 Ops/sec
2	15.2 Ops/sec
3	36.3 Ops/sec
4	32.4 Ops/sec
5	26.4 Ops/sec

Script Preparation code:

var input = [];

for (i = 2; i <= 100000; i++) {
    const date = new Date(Math.random()*1000);
  
    const value = i % 2 === 0 ? date.toISOString() : 'some random value';
    const key = i % 2 === 0 ? 'businessDate' : 'some random key';
  
    input.push({
        key,
        value
    });
  
    input.push({
        key: 'index',
        value: i
    });
}

Tests:

1
const result = input.map(x=>{ if (x.key === 'businessDate') { return new Date(x.value); } return x.value; });
2
const result = input.map(x=>{ if (typeof x.value === 'string') { const date = new Date(x.value); return isNaN(date) ? x.value : date; } return x.value; });
3
const result = input.map(x=>{ if (x.key.endsWith('Date')) { return new Date(x.value); } return x.value; });
4
const result = input.map(x=>{ if (typeof x.value === 'string' && /(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})/.test(x.value)) { return new Date(x.value); } return x.value; });
5
const result = input.map(x=>{ if (/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})/.test(x.value)) { return new Date(x.value); } return x.value; });