hydrate.js

export class LazyHydrateDemo {
  async hydrate() {
    if (this.hydrated) return
    this.value = await this.state.storage.get('value') ?? 0
    this.hydrated = true
  }

  constructor(state, env) {
    this.state = state
    this.env = env
    this.hydrated = false
  }

  async fetch(request) {
    // Do input checking on request
    // Route to endpoints that don't require hydration like OPTIONS
    await this.hydrate()
    this.value++
    await this.state.storage.put('value', this.value)
    return new Response(this.value)
  }
}