Function hook

repos/effect/packages/effect/src/Metric.ts:1762–1779

(context: Context.Context<never>)

    }
    return makeHooks(() => ({ count, incremental: this.#incremental }), update)
  }
}

class GaugeMetric<Input extends number | bigint> extends Metric$<Input, GaugeState<Input>> {
  readonly type = "Gauge"
  readonly #bigint: boolean

  constructor(id: string, options?: {
    readonly description?: string | undefined
    readonly attributes?: Metric.Attributes | undefined
    readonly bigint?: boolean | undefined
  }) {
    super(id, options?.description, attributesToRecord(options?.attributes))
    this.#bigint = options?.bigint ?? false
  }

  createHooks(): Metric.Hooks<Input, GaugeState<Input>> {
    let value = this.#bigint ? BigInt(0) as any : 0
    const update = (input: number | bigint) => {
      value = input
    }