Function constructor

packages/core/src/lib/abstract-unit-base.ts:226–256

* @internal please do not use.

(config?: UnitConfig<T>)

   * @internal please do not use.
   */
  protected constructor(config?: UnitConfig<T>) {
    super({
      ...Configuration.UNITS,
      ...config,
    });

    const {
      cacheSize,
      initialValue,
      dispatchDebounce,
      dispatchDebounceMode,
      persistent,
    }: UnitConfig<T> = this.config;

    this.cacheSize = isNumber(cacheSize) ? Math.max(1, cacheSize) : 2; // min 1, default 2

    if (persistent === true) {
      this.restoreValueFromPersistentStorage(initialValue);
    } else {
      this.checkSerializabilityMaybe(initialValue);
      this.dispatchInitialValue(this.deepCopyMaybe(initialValue));
    }

    if (dispatchDebounce === true || isNumber(dispatchDebounce)) {
      this.dispatchMiddleware = debounce(
        this.dispatchMiddleware.bind(this),
        dispatchDebounce as number,
        dispatchDebounceMode
      );
    }
  }

  /**
   * A helper method that creates a stream by subscribing to the Observable returned by the param `observableProducer` callback.