Function getUntaintedAccessor

packages/utils/src/index.ts:138–164

(
  key: K,
  instance: BasePrototypeCache[K],
  accessor: T,
)

> = {};

export function getUntaintedAccessor<
  K extends keyof BasePrototypeCache,
  T extends keyof BasePrototypeCache[K],
>(
  key: K,
  instance: BasePrototypeCache[K],
  accessor: T,
): BasePrototypeCache[K][T] {
  const cacheKey = `${key}.${String(accessor)}`;
  if (untaintedAccessorCache[cacheKey])
    return untaintedAccessorCache[cacheKey].call(
      instance,
    ) as BasePrototypeCache[K][T];

  const untaintedPrototype = getUntaintedPrototype(key);
  // eslint-disable-next-line @typescript-eslint/unbound-method
  const untaintedAccessor = Object.getOwnPropertyDescriptor(
    untaintedPrototype,
    accessor,
  )?.get;

  if (!untaintedAccessor) return instance[accessor];

  untaintedAccessorCache[cacheKey] = untaintedAccessor;

  return untaintedAccessor.call(instance) as BasePrototypeCache[K][T];
}

type BaseMethod<K extends keyof BasePrototypeCache> = (
  this: BasePrototypeCache[K],