workers.api.error.durable_object_namespace_name_taken [API code: 10065]

https://api.cloudflare.com/client/v4/accounts/$ACCOUNT/workers/durable_objects/namespaces

DELETE

https://api.cloudflare.com/client/v4/accounts/$ACCOUNT/workers/durable_objects/namespaces/$NAMESPACE_ID

constructor(state, env) {
    this.state = state
    // `blockConcurrencyWhile()` ensures no requests are delivered until
    // initialization completes.
    this.state.blockConcurrencyWhile(async () => {
      let stored = await this.state.storage.get('value')
      this.value = stored || 10
    })
  }

module.exports = class Counter {
  constructor(state, env) {
    this.state = state
    // `blockConcurrencyWhile()` ensures no requests are delivered until
    // initialization completes.
    this.state.blockConcurrencyWhile(async () => {
      let stored = await this.state.storage.get('value')
      this.value = stored || 10
    })
  }

  // Handle HTTP requests from clients.
  async fetch(request, options) {
    // Apply requested action.
    let url = new URL(request.url)
    let currentValue = this.value

    const pathname = url.pathname.split('/')
    const path = pathname[1]
    const amount = pathname[2]

    switch (path) {
      case 'increment':
        this.value += amount
        currentValue = this.value
        await this.state.storage.put('value', this.value)
        break
      case 'decrement':
        this.value -= amount
        currentValue = this.value
        await this.state.storage.put('value', this.value)
        break
      case '':
        // Just serve the current value. No storage calls needed!
        break
      default:
        return new Response('Not found', { status: 404 })
    }

    // Return `currentValue`. Note that `this.value` may have been
    // incremented or decremented by a concurrent request when we
    // yielded the event loop to `await` the `storage.put` above!
    // That's why we stored the counter value created by this
    // request in `currentValue` before we used `await`.
    return new Response(currentValue)
  }
}

async function handleCount(url, env) {
  let id = env.COUNTER.idFromName('A');
  let obj = env.COUNTER.get(id);
  let resp = await obj.fetch(url);
  let count = parseInt(await resp.text());
  return count;
}

value

3 + undefined

NaN

|| 10

value