import { WildcardHandler } from "mitt";
import { Document } from "./Document.js";
import { Link } from "./Link.js";
import { DocumentsOtions, SortDirection } from "./query.js";
import { Task } from "./Task.js";
type Events = {
    update: {
        document: Document;
    };
    delete: {
        document: Document;
    };
    create: {
        document: Document;
    };
    ready: void;
};
export { Document, DocumentsOtions, SortDirection, Task, Link };
export type Frontmatter = Record<string, unknown>;
export type BrainDBOptionsIn = {
    /**
     * If `dbPath` is present, than DB would be persited to the disc and used as cache on the next run
     */
    dbPath?: string;
    /**
     * Even if `dbPath` is absent, and DB stored in memory it can be long runing process and cache can be used
     */
    cache?: boolean;
    /**
     * function to generate path (URL) a the document
     */
    url?: (filePath: string, frontmatter: Frontmatter) => string;
    /**
     * function to generate slug for a document
     */
    slug?: (filePath: string, frontmatter: Frontmatter) => string;
    /**
     * root of the project
     */
    root: string;
    /**
     * source files
     */
    source?: string;
    /**
     * if `true` will use git date for `updated_at` field.
     * It will search for git repo in `root` or any parent directory
     */
    git?: boolean;
    /**
     * if you never use Document's `markdown` and `text`
     * you can set this to `false` in order to save some memory
     */
    storeMarkdown?: boolean;
};
export type BrainDBOptionsOut = {
    linkType?: "PML" | "web";
    /**
     * If output use PML, sometimes it may be required to adjust them to the new root
     */
    transformPath?: (path: string) => string;
    transformFrontmatter?: (doc: Document) => Frontmatter;
    /**
     * experimental
     * @param path string
     * @param node mdast node
     * @returns undefined | mdast node
     */
    transformUnresolvedLink?: (path: string, node: any) => any;
};
export declare class BrainDB {
    private cfg;
    private emitter;
    private db;
    private watcher;
    private initializing;
    private initQueue;
    constructor(cfg: BrainDBOptionsIn);
    start(silent?: boolean): this;
    stop(): Promise<this>;
    on(type: "*", handler: WildcardHandler<Events>): this;
    off(type: "*", handler: WildcardHandler<Events>): this;
    ready(): Promise<unknown>;
    documentsSync(options?: DocumentsOtions): Document[];
    documents(options?: DocumentsOtions): Promise<Document[]>;
    findDocumentSync(path: string): Document;
    findDocument(path: string): Promise<Document>;
    linksSync(): Link[];
    links(): Promise<Link[]>;
    /**
     * TODO: filter by checked true/false
     */
    tasksSync(): Task[];
    tasks(): Promise<Task[]>;
    __rawQuery(query: string): unknown[];
}