'use strict';

exports.linearBuckets = (start, width, count) => {
	if (count < 1) {
		throw new Error('Linear buckets needs a positive count');
	}

	const buckets = new Array(count);
	for (let i = 0; i < count; i++) {
		buckets[i] = start + i * width;
	}
	return buckets;
};

exports.exponentialBuckets = (start, factor, count) => {
	if (start <= 0) {
		throw new Error('Exponential buckets needs a positive start');
	}
	if (count < 1) {
		throw new Error('Exponential buckets needs a positive count');
	}
	if (factor <= 1) {
		throw new Error('Exponential buckets needs a factor greater than 1');
	}
	const buckets = new Array(count);
	for (let i = 0; i < count; i++) {
		buckets[i] = start;
		start *= factor;
	}
	return buckets;
};