Monitor websites uptime using Cloudflare Workers
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TypeScript
at optimization
123456789101112131415161718192021222324252627282930import type { IntervalSeconds, RegionId } from '@uptime/contracts';import { checkIntervalPresets } from '@uptime/contracts';
export function checkFrequencySliderIndex(intervalSeconds: IntervalSeconds): number { return Math.max(0, checkIntervalPresets.indexOf(intervalSeconds));}
export function intervalSecondsForSliderIndex(index: number): IntervalSeconds { const boundedIndex = Math.max(0, Math.min(checkIntervalPresets.length - 1, Math.round(index))); return checkIntervalPresets[boundedIndex]!;}
export function expectedChecksPerDay( regionIds: readonly RegionId[], intervalSeconds: IntervalSeconds,): number { return regionIds.length * (86_400 / intervalSeconds);}
export function expectedDnsSnapshotsPerDay( regionIds: readonly RegionId[], enabled: boolean,): number { return enabled ? regionIds.length : 0;}
export function isValidTimeout(timeoutMs: number, intervalSeconds: IntervalSeconds): boolean { return timeoutMs >= 1_000 && timeoutMs <= 30_000 && timeoutMs < intervalSeconds * 1_000;}