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import { AnyInterpreter } from './types';
/** * Maintains a stack of the current service in scope. * This is used to provide the correct service to spawn(). */
const serviceStack = [] as Array<AnyInterpreter | undefined>;
export const provide = <T, TService extends AnyInterpreter>(  service: TService | undefined,  fn: (service: TService | undefined) => T) => {  serviceStack.push(service);  const result = fn(service);  serviceStack.pop();  return result;};
export const consume = <T, TService extends AnyInterpreter>(  fn: (service: TService) => T) => fn(serviceStack[serviceStack.length - 1] as TService);