export declare class Spinner {
    private msg;
    private timer;
    private i;
    constructor(msg: string);
    get isSpinning(): boolean;
    private clear;
    stop(detail?: string): void;
    fail(msg: string): void;
    warn(msg: string): void;
}
export declare const logger: {
    step: (msg: string) => void;
    detail: (msg: string) => void;
    success: (msg: string) => void;
    warn: (msg: string) => void;
    error: (msg: string) => void;
    info: (...args: unknown[]) => void;
    spin: (msg: string) => Spinner;
};
export declare function elapsed(startMs: number): string;
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