/// <reference types="node" />
import * as fs from "fs";
export declare enum TaskStatus {
    PENDING = 0,
    DONE = 1,
    DROPPED = 2
}
interface FileConcentratorParams {
    taskStatusRecord: TaskStatus[];
    outputPath: string;
    deleteAfterWritten?: boolean;
    ignoreBreakpoints?: boolean;
}
interface ConcentrationTask {
    filePath: string;
    index: number;
}
declare class FileConcentrator {
    taskStatusRecords: TaskStatus[];
    taskWriteCount: number[];
    breakpoints: number[];
    tasks: ConcentrationTask[];
    outputFilename: string;
    outputFileExt: string;
    writeStream: fs.WriteStream;
    lastFinishIndex: number;
    writeSequence: number;
    isCheckingWritableFiles: boolean;
    deleteAfterWritten: boolean;
    ignoreBreakpoints: boolean;
    constructor({ taskStatusRecord, outputPath, deleteAfterWritten, ignoreBreakpoints }: FileConcentratorParams);
    private createNextWriteStream;
    private waitStreamWritable;
    private checkWritableTasks;
    private writeFiles;
    addTasks(tasks: ConcentrationTask[]): void;
    /**
     * 注意：必须在所有任务添加后调用
     */
    waitAllFilesWritten(): Promise<void>;
    closeWriteStream(): Promise<unknown>;
    getOutputFilePaths(): string[];
}
export default FileConcentrator;