mirror of https://codeberg.org/pzp/pzp-sync.git
33 lines
548 B
JavaScript
33 lines
548 B
JavaScript
/**
|
|
* @typedef {[number, number]} Range
|
|
*/
|
|
|
|
/**
|
|
* @param {Range} range
|
|
* @returns {boolean}
|
|
*/
|
|
function isEmptyRange(range) {
|
|
const [min, max] = range
|
|
return min > max
|
|
}
|
|
|
|
/**
|
|
* @param {Range} range
|
|
* @returns {number}
|
|
*/
|
|
function estimateMsgCount(range) {
|
|
const [minDepth, maxDepth] = range
|
|
const estimate = 2 * (maxDepth - minDepth + 1)
|
|
if (estimate > 1000) return 1000
|
|
else if (estimate < 5) return 5
|
|
else return estimate
|
|
}
|
|
|
|
const EMPTY_RANGE = [1, 0]
|
|
|
|
module.exports = {
|
|
isEmptyRange,
|
|
estimateMsgCount,
|
|
EMPTY_RANGE
|
|
}
|