export declare const inspectSymbol: unique symbol;
export declare function defineInspectMethod<T>(obj: T, method: (this: T, depth: number, context: any, inspect: Function) => string): T;
/**
 * try to call `inspect` method of an object, if not exists, call `toString`.
 * @returns {string}
 */
export declare function tryInspect(object: any): string;
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