/** A log entry as a capturing log writer receives it. */
export type CapturedLog = {
    logLevel: string;
    message?: string;
    obj?: any;
    error?: any;
};
/**
 * An error as ANYTHING that prints errors would print it — what a value must never be found in:
 * its message and stack; its `util.inspect` rendering, stock (the default dev log writer,
 * `console.*`), with hidden properties shown and getters run, and the same with the error's own
 * rendering switched OFF (`customInspect: false` — the raw object walk, which runs every accessor
 * on the prototype chain); its serialized form (a structured writer); the standard `cause` chain an
 * error reporter walks, message and `details` at each link; and every own property of the error,
 * enumerable or not.
 */
export declare const printed: (error: any) => string;
/** The text a log writer would print for a captured line. */
export declare const lineOf: (log: CapturedLog) => string;
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