Statistic mode() returns wrong value for some string arrays

[tmhglnd]

When using the mode() on for example the following array: [ 'i', '_', ')', '_', 'B', '_' ] the result is [ '_', ')', '_', 'B', '_' ], but the expected result should be: [ '_' ]

[tmhglnd]

Possible solution (still to be implemented and tested and adapted for multi-dimensional arrays)

// find the mode (or modes) in a one-dimensional array
function mode(list){
	// get all the unique occurances and the amount of times they occur
	let occurances = {};
	list.forEach((o) => {
		if (!occurances[o]){
			occurances[o] = 0;
		}
		occurances[o]++;
	});

	// for all the items save the best streak (or streaks)
	let modes = [];
	let streak = 0;
	Object.keys(occurances).forEach((o) => {
		if (occurances[o] > streak){
			streak = occurances[o];
			modes = [o];
		} else if (occurances[o] === streak){
			modes.push(o);
		}
	});

	return modes;
}