/**
 * Expected error that shouldn't print a stack trace
 */
export declare class YargsError extends Error {
}
export type Result<T> = {
    err: null;
    result: T;
} | {
    err: Error;
};
export declare function wrapError<T>(promise: Promise<T>): Promise<Result<T>>;
export declare function wrapFnError<T>(fn: () => T): Result<T>;
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