export declare class Appender<T = any> implements Iterable<T> {
    [key: number]: T[] | undefined;
    length: number;
    keyMap: Map<string, number>;
    isAppender: boolean;
    constructor(...defaultDatas: T[]);
    [Symbol.iterator](): Iterator<T>;
    set(key: string, ...v: T[]): void;
    delete(key: string): void;
    getAll(): T[];
    getAlls(): T[][];
    push(...items: T[]): void;
    clear(): void;
}
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