export declare const browserFamily: (binary: string) => string;
export declare const profileDir: (binary: string) => string;
export declare const isChromiumFamily: (path: string) => boolean;
export declare const browserCandidates: (platform: NodeJS.Platform) => string[];
export declare const registryValue: (output: string) => string | undefined;
export declare const executableFromCommand: (command: string) => string | undefined;
export declare const executableFromDesktopEntry: (contents: string) => string | undefined;
export declare const defaultBrowser: (platform?: NodeJS.Platform) => Promise<string | undefined>;
export declare const shippedWithOs: (path: string) => boolean;
export declare const pickBrowser: (chosen: string | undefined, installed: readonly string[]) => string | undefined;
export declare const ACTIVE_PORT_FILE = "DevToolsActivePort";
export interface ActivePort {
    readonly port: number;
    readonly path: string;
}
export declare const parseActivePort: (text: string) => ActivePort | undefined;
export declare const ownsEndpoint: (file: ActivePort | undefined, answered: string | undefined) => boolean;
export declare const ownEndpoint: () => Promise<number | undefined>;
export declare const ensureBrowser: (url?: string) => Promise<{
    readonly started: boolean;
    readonly port: number;
}>;
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