import { InjectionToken } from '@angular/core';
export interface DBConfig {
    name: string;
    version?: number;
    objectStoresMeta: ObjectStoreMeta[];
    migrationFactory?: () => {
        [key: number]: (db: IDBDatabase, transaction: IDBTransaction) => void;
    };
    isDefault?: boolean;
}
export interface ObjectStoreMeta {
    store: string;
    storeConfig: {
        keyPath: string | string[];
        autoIncrement: boolean;
        [key: string]: any;
    };
    storeSchema: ObjectStoreSchema[];
}
export interface ObjectStoreSchema {
    name: string;
    keypath: string | string[];
    options: {
        unique: boolean;
        [key: string]: any;
    };
}
export interface IndexDetails {
    indexName: string;
    order: string;
}
export interface RequestEvent<T> extends Event {
    target: RequestEventTarget<T>;
}
export interface RequestEventTarget<T> extends EventTarget {
    result: T | T[];
}
export declare enum DBMode {
    readonly = "readonly",
    readwrite = "readwrite"
}
export type WithID = {
    id: number;
};
export type IndexKey<P extends IDBValidKey, K extends IDBValidKey> = {
    readonly primaryKey: P;
    readonly key: K;
};
type Modify<T, R> = Omit<T, keyof R> & R;
export type NgxIDBCursor<P extends IDBValidKey, K extends IDBValidKey, V = any> = Modify<IDBCursor, {
    key: K;
    primaryKey: P;
    update(value: V): IDBRequest<IDBValidKey>;
}>;
export type NgxIDBCursorWithValue<V = any, P extends IDBValidKey = IDBValidKey, K extends IDBValidKey = IDBValidKey> = NgxIDBCursor<P, K, V> & {
    value: V;
};
export declare const CONFIG_TOKEN: InjectionToken<Record<string, DBConfig>>;
export declare const INDEXED_DB: InjectionToken<IDBFactory>;
/**
 * Token used to inject the indexed db implementation on the server
 */
export declare const SERVER_INDEXED_DB: InjectionToken<IDBFactory>;
export {};