Benchmark: array of objects to object v3

HTML Preparation code:

<script>
const parts = [{
        "type": "currency",
        "value": "€"
    },
    {
        "type": "integer",
        "value": "1"
    },
    {
        "type": "group",
        "value": ","
    },
    {
        "type": "integer",
        "value": "000"
    },
    {
        "type": "decimal",
        "value": "."
    },
    {
        "type": "fraction",
        "value": "00"
    }
]
</script>

Tests:

reduce with spread
parts.reduce((result, { type, value }) => ({ ...result, [type]: value }), {});
reduce with assign
parts.reduce((result, { type, value }) => { result[type] = value; return result; }, {});
reduce with mapped assign
parts.reduce((result, { type, value }) => { switch (type) { case 'currency': result.currencySign = value; break; case 'decimal': result.decimalSeparator = value; break; case 'group': result.thousandSeparator = value; break; default: break; } return result; }, {});
reduce with mapped assign (compact)
const METADATA = { currency: 'currencySign', decimal: 'decimalSeparator', group: 'thousandSeparator', }; parts.reduce((result, { type, value }) => { if (METADATA[type]) result[METADATA[type]] = value; return result; }, {});
reduce with mapped assign (if-else)
parts.reduce((result, { type, value }) => { if (type === 'currency') result.currencySign = value else if (type === 'decimal') result.decimalSeparator = value else if (type === 'group') result.thousandSeparator = value return result; }, {});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
reduce with spread
reduce with assign
reduce with mapped assign
reduce with mapped assign (compact)
reduce with mapped assign (if-else)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Browser/OS: Chrome 115 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
reduce with spread	1533504.0 Ops/sec
reduce with assign	8200524.0 Ops/sec
reduce with mapped assign	15384810.0 Ops/sec
reduce with mapped assign (compact)	6749742.0 Ops/sec
reduce with mapped assign (if-else)	15363900.0 Ops/sec

array of objects to object v3 (version: 0)

Comparing performance of: reduce with spread vs reduce with assign vs reduce with mapped assign vs reduce with mapped assign (compact) vs reduce with mapped assign (if-else)

Created: 9 months ago by: Guest

Jump to the latest result

reduce with spread

reduce with assign

reduce with mapped assign

reduce with mapped assign (compact)

reduce with mapped assign (if-else)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A