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