import * as i0 from "@angular/core";
export declare class LocalService {
    constructor();
    private durationFormatSubVal;
    durationText(duration: any): string;
    loadScript(scriptUrl: string): void;
    checkStreamUrl(url: string): Promise<boolean>;
    /**
     * 获取文件后缀
     * @param filename string 文件名
     * @returns extension
     */
    getFileExtension(filename: string): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<LocalService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LocalService>;
}