export interface Logger {
    /** Whether verbose logging is enabled. Default false unless --verbose arg is given. */
    enableVerbose: boolean;
    /** Log to `console.info` with a timestamp, but only if verbose logging is enabled. */
    verbose(...args: any[]): void;
    /** Log to `console.info` with a timestamp. */
    info(...args: any[]): void;
    /** Log to `console.warn` with a timestamp. */
    warn(...args: any[]): void;
    /** Log to `console.error` with a timestamp. */
    error(...args: any[]): void;
    /** Log perf marker data to `consold.info` with timestamp, only if verbose is enabled */
    perf(marker: string, ...args: any[]): void;
}
export declare const logger: Logger;
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