Benchmark: array vs frozen array loop

Script Preparation code:

var a = [
    /@atlassian\/parcel/,
    /@parcel\//,
    /@oxc-resolver\/.+/,
];
var b = Object.freeze([
    /@atlassian\/parcel/,
    /@parcel\//,
    /@oxc-resolver\/.+/,
]);

Tests:

normal array
for (const matcher of a) { if (matcher.test("SOMETHING")) { return 'yes'; } return 'no' }
frozen array
for (const matcher of b) { if (matcher.test("SOMETHING")) { return 'yes'; } return 'no' }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
normal array
frozen array

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Windows

View result in a separate tab

Test name	Executions per second
normal array	11036072.0 Ops/sec
frozen array	8346339.5 Ops/sec

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array vs frozen array loop (version: 0)

Comparing performance of: normal array vs frozen array

Created: one year ago by: Registered User

Jump to the latest result

normal array

frozen array

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A