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// maybeAsyncResult() allows the same error/completion handler to be// applied to a value regardless of whether it is a concrete value or an// eventual value.//// As of yargs@v17, if no asynchronous steps are run, .e.g, a// check() script that resolves a promise, yargs will return a concrete// value. If any asynchronous steps are introduced, yargs resolves a promise.import {isPromise} from './is-promise.js';export function maybeAsyncResult<T>(  getResult: (() => T | Promise<T>) | T | Promise<T>,  resultHandler: (result: T) => T | Promise<T>,  errorHandler: (err: Error) => T = (err: Error) => {    throw err;  }): T | Promise<T> {  try {    const result = isFunction(getResult) ? getResult() : getResult;    return isPromise(result)      ? result.then((result: T) => resultHandler(result))      : resultHandler(result);  } catch (err) {    return errorHandler(err as Error);  }}
function isFunction(arg: (() => any) | any): arg is () => any {  return typeof arg === 'function';}