Run results for: flattendeep

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36

Browser: Chrome 79

Operating system: Mac OS X 10.15.1

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
niceFlattenDeep	136996.5 Ops/sec
fasterFlattenDeep	249545.8 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:

niceFlattenDeep = arr => {
	return arr.reduce( (result, el) => {
		return result.concat(
			Array.isArray(el) ? niceFlattenDeep(el) : el
		)
	}, []);
}



fasterFlattenDeep = (array, result) => {
	const length = array.length;
	let index = -1;

	result = result || [];

	while (++index < length) {
		let value = array[index];
		if (Array.isArray(value)) {
			fasterFlattenDeep(value,  result);

		} else {
			result[result.length] = value;

		}
	}
	
	return result;
}

Tests:

niceFlattenDeep
niceFlattenDeep([ 1, [ 2, [ 3 ] ], 4, [[5, [6, 7]],[[[[[8]]]]]] ])
fasterFlattenDeep
fasterFlattenDeep([ 1, [ 2, [ 3 ] ], 4, [[5, [6, 7]],[[[[[8]]]]]] ])