/**
 * Importing npm packages
 */
/**
 * Importing user defined packages
 */
/**
 * Defining types
 */
export type TryResult<TError, TResult> = {
    success: true;
    data: TResult;
} | {
    success: false;
    error: TError;
};
/**
 * Declaring the constants
 */
export declare function throwError(error: Error): never;
export declare function tryCatch<TError extends Error, TResult>(fn: () => Promise<TResult>): Promise<TryResult<TError, TResult>>;
export declare function tryCatch<TError extends Error, TResult>(fn: () => TResult): TryResult<TError, TResult>;
export declare function withThis<T, A extends any[], R>(fn: (context: T, ...args: A) => R): (this: T, ...args: A) => R;