Function create

packages/arctic/src/id/id.ts:53–72

(prefix: keyof typeof prefixes, descending: boolean, timestamp?: number)

  }

  export function create(prefix: keyof typeof prefixes, descending: boolean, timestamp?: number): string {
    const currentTimestamp = timestamp ?? Date.now()

    if (currentTimestamp !== lastTimestamp) {
      lastTimestamp = currentTimestamp
      counter = 0
    }
    counter++

    let now = BigInt(currentTimestamp) * BigInt(0x1000) + BigInt(counter)

    now = descending ? ~now : now

    const timeBytes = Buffer.alloc(6)
    for (let i = 0; i < 6; i++) {
      timeBytes[i] = Number((now >> BigInt(40 - 8 * i)) & BigInt(0xff))
    }

    return prefixes[prefix] + "_" + timeBytes.toString("hex") + randomBase62(LENGTH - 12)
  }
}