Run results for: isString Test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lodash	12070.0 Ops/sec
replacement	43333.5 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function isString(input) {
    if (input === '') return true;

    if (input && typeof input.valueOf() === 'string') {
        return true;
    }

    return false;
}

var emptyString = '';
var nullString = null;
var normalString = 'hello';
var array = ['hello'];
var otherObject = {};
var objectString = new String('hello');

Tests:

lodash
for (let i = 0; i < 1000; i++) { _.isString(emptyString); _.isString(nullString); _.isString(normalString); _.isString(array); _.isString(otherObject); _.isString(objectString); }
replacement
for (let i = 0; i < 1000; i++) { isString(emptyString); isString(nullString); isString(normalString); isString(array); isString(otherObject); isString(objectString); }

Run results for: isString Test

lodash

replacement