/**
 * Executes a script at `filepath` in a Node.js worker thread.
 */
export declare const execWorkerThread: <Input, Output>(filepath: string, input: Input) => Promise<Output>;
/**
 * Runs a function in a Node.js worker thread context, forwarding the result
 * to the parent thread.
 */
export declare const postWorkerOutput: <Input, Output>(fn: (input: Input) => Promise<Output>, logger?: {
    settings: {
        debug: boolean;
        prefixes: unknown[];
        suffixes: unknown[];
    };
    bold: (text: string) => string;
    dim: (text: string) => string;
    formatSubtle: (text: string) => string;
    timing: (start: bigint, end: bigint) => string;
    debug: (...message: unknown[]) => void;
    subtle: (...message: unknown[]) => void;
    err: (...message: unknown[]) => void;
    newline: () => void;
    ok: (...message: unknown[]) => void;
    plain: (...message: unknown[]) => void;
    warn: (...message: unknown[]) => void;
}) => void;