const count = 10_000;
const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-.,_:;#+*'?=)(/&%$!";

function randomString(size) {
	var string = "";
	for ( let i = 0; i < size; i++ ) {
		string += chars[Math.floor(Math.random() * chars.length)];
	}
	
	return string;
}

var hugeArrayOfObjects = [];
for ( let i = 0; i < count; i++ ) {
	hugeArrayOfObjects.push({
		lon: Math.random() * 360 - 180,
		lat: Math.random() * 180 - 90,
		a: randomString(32),
		b: randomString(16),
		c: randomString(48),
	});
}

var hugeArrayOfStrings = [];
for ( let i = 0; i < count; i++ ) {
	const src = hugeArrayOfObjects[i];

	hugeArrayOfStrings.push([src.lon, src.lat, src.a, src.b, src.c].join(";"));
}

var hugeString = hugeArrayOfStrings.join("|");

Teardown JS

Test cases

Test #1

Title *

Async

Code *const a = JSON.parse(JSON.stringify(hugeArrayOfStrings));

Test #2

Title *

Async

Code *const b = structuredClone(hugeArrayOfStrings);

Test #3

Title *

Async

Code *const c = JSON.parse(JSON.stringify(hugeArrayOfObjects));

Test #4

Title *

Async

Code *const d = structuredClone(hugeArrayOfObjects);

Test #5

Title *

Async

Code *const e = JSON.parse(JSON.stringify(hugeString));

Test #6

Title *

Async

Code *const f = structuredClone(hugeString);

Test case details

Preparation Code

Test cases

Test #1

Test #2

Test #3

Test #4

Test #5

Test #6