Function write

packages/arctic/src/util/lock.ts:73–97

(key: string)

  }

  export async function write(key: string): Promise<Disposable> {
    const lock = get(key)

    return new Promise((resolve) => {
      if (!lock.writer && lock.readers === 0) {
        lock.writer = true
        resolve({
          [Symbol.dispose]: () => {
            lock.writer = false
            process(key)
          },
        })
      } else {
        lock.waitingWriters.push(() => {
          lock.writer = true
          resolve({
            [Symbol.dispose]: () => {
              lock.writer = false
              process(key)
            },
          })
        })
      }
    })
  }
}