import { ChangeObject, DiffOptionsWithoutCallback, DiffOptionsWithCallback, DiffCallback } from '../types';
export default class Diff<TokenT, ValueT extends Iterable<TokenT> = Iterable<TokenT>> {
    diff(oldString: ValueT, newString: ValueT, options: DiffCallback<TokenT> | DiffOptionsWithCallback<TokenT>): undefined;
    diff(oldString: ValueT, newString: ValueT, options: DiffOptionsWithoutCallback): ChangeObject<ValueT>[];
    private diffWithOptionsObj;
    private addToPath;
    private extractCommon;
    protected equals(left: TokenT, right: TokenT, options: DiffOptionsWithoutCallback): boolean;
    protected removeEmpty(array: TokenT[]): TokenT[];
    protected castInput(value: ValueT, options: DiffOptionsWithoutCallback): ValueT;
    protected tokenize(value: ValueT, options: DiffOptionsWithoutCallback): TokenT[];
    protected join(chars: TokenT[]): ValueT;
    protected postProcess(changeObjects: ChangeObject<ValueT>[], options: DiffOptionsWithoutCallback): ChangeObject<ValueT>[];
    protected get useLongestToken(): boolean;
    private buildValues;
}