import ts from 'typescript';
import { Types } from '../../constants';
import { Helper } from '../Helper';
export interface TypedHelperOptions {
    readonly type: ts.Type | undefined;
    readonly knownType?: Types;
}
export declare abstract class TypedHelper<Node extends ts.Node = ts.Node> extends Helper<Node> {
    protected readonly type: ts.Type | undefined;
    protected readonly knownType: Types | undefined;
    constructor({ knownType, type }: TypedHelperOptions);
}