Method rangeQueryReversed

packages/db/src/indexes/btree-index.ts:279–291

* Performs a reversed range query

(options: RangeQueryOptions = {})

   * Performs a reversed range query
   */
  rangeQueryReversed(options: RangeQueryOptions = {}): Set<TKey> {
    const { from, to, fromInclusive = true, toInclusive = true } = options
    const hasFrom = `from` in options
    const hasTo = `to` in options

    // Swap from/to for reversed query, respecting explicit undefined values
    return this.rangeQuery({
      from: hasTo ? to : this.orderedEntries.maxKey(),
      to: hasFrom ? from : this.orderedEntries.minKey(),
      fromInclusive: toInclusive,
      toInclusive: fromInclusive,
    })
  }

  /**
   * Internal method for taking items from the index.