Function fetchDailyRangeCached

app/composables/useCharts.ts:218–245

(packageName: string, startIso: string, endIso: string)

}

async function fetchDailyRangeCached(packageName: string, startIso: string, endIso: string) {
  const cache = npmDailyRangeCache

  if (!cache) {
    const response = await fetchNpmDownloadsRange(packageName, startIso, endIso)
    return [...response.downloads]
      .sort((a, b) => a.day.localeCompare(b.day))
      .map(d => ({ day: d.day, value: d.downloads }))
  }

  const cacheKey = `${packageName}:${startIso}:${endIso}`
  const cachedPromise = cache.get(cacheKey)
  if (cachedPromise) return cachedPromise

  const promise = fetchNpmDownloadsRange(packageName, startIso, endIso)
    .then(response =>
      [...response.downloads]
        .sort((a, b) => a.day.localeCompare(b.day))
        .map(d => ({ day: d.day, value: d.downloads })),
    )
    .catch(error => {
      cache.delete(cacheKey)
      throw error
    })

  cache.set(cacheKey, promise)
  return promise
}

/**
 * API limit workaround: