import { Constructor } from '../utils/process-error';
interface InstanceOf {
    /**
     * check if value is an instance of a constructor
     * @param value
     * @param constructor
     * @example instanceOf(new Error(), Error);
     */
    <T extends Constructor>(value: InstanceType<T>, constructor: T): void;
}
export declare const instanceOf: InstanceOf, notInstanceOf: InstanceOf;
export {};
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