Run results for: tk lodash merge vs spread operator

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
lodash merge	110918.1 Ops/sec
native spread operator	9144155.0 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:

var line = [{
    order: 1,
    person: {
        name: 'Fred'
    }
}, {
    order: 2,
    person: {
        name: 'Bill'
    }
}, {
    order: 3,
    person: {
        name: 'Mary'
    }
}, {
    order: 4,
    person: {
        name: 'Tom'
    }
}, {
    order: 5,
    person: {
        name: 'Becky'
    }
}, {
    order: 6,
    person: {
        name: 'Sara'
    }
}, {
    order: 7,
    person: {
        name: 'Charles'
    }
}, {
    order: 8,
    person: {
        name: 'Pamela'
    }
}, {
    order: 9,
    person: {
        name: 'Susan'
    }
}, {
    order: 10,
    person: {
        name: 'Ricky'
    }
}];

var updatedLine = [{
    order: 4,
    person: {
        name: 'Fred'
    }
}, {
    order: 7,
    person: {
        name: 'Bill'
    }
}, {
    order: 10,
    person: {
        name: 'Mary'
    }
}, {
    order: 9,
    person: {
        name: 'Tom'
    }
}, {
    order: 5,
    person: {
        name: 'Becky'
    }
}, {
    order: 2,
    person: {
        name: 'Sara'
    }
}, {
    order: 8,
    person: {
        name: 'Charles'
    }
}, {
    order: 6,
    person: {
        name: 'Pamela'
    }
}, {
    order: 9,
    person: {
        name: 'Susan'
    }
}, {
    order: 1,
    person: {
        name: 'Ricky'
    }
}];

Tests:

lodash merge
let copied = _.merge(line, updatedLine);
native spread operator
/*const hax = [{ order: 11, person: { name: 'Hax' }]; */ let copied = [...line, ...updatedLine];

Run results for: tk lodash merge vs spread operator

lodash merge vs spread operator

lodash merge

native spread operator