export type LogLevel = "debug" | "info" | "warn" | "error";
type LogEntry = {
    level?: LogLevel;
    message?: string | RegExp;
    [key: string]: unknown;
};
type EntryStore = {
    expected: LogEntry[];
    unexpected: LogEntry[];
};
export interface LogStruct {
    level: LogLevel;
    message: string;
    [key: string]: unknown;
}
export type Transport = (data: LogStruct) => void;
export declare function createCSVTransport(path: string): (data: LogStruct) => void;
export declare function createJSONLTransport(path: string): (data: LogStruct) => void;
interface ExtendableExpect {
    extend(params: object): void;
}
export declare function Logger(): {
    entries: EntryStore;
    debug: (data: string | object) => void;
    info: (data: string | object) => void;
    warn: (data: string | object) => void;
    error: (data: string | object) => void;
    setLogLevel(level: LogLevel): void;
    setSilent(silent: boolean): void;
    setTransport(transport: Transport): {
        entries: EntryStore;
        debug: (data: string | object) => void;
        info: (data: string | object) => void;
        warn: (data: string | object) => void;
        error: (data: string | object) => void;
        setLogLevel(level: LogLevel): void;
        setSilent(silent: boolean): void;
        setTransport(transport: Transport): /*elided*/ any;
        setGlobal(data: object): /*elided*/ any;
        runInTest(expect: ExtendableExpect): /*elided*/ any;
        expect(info: LogEntry): /*elided*/ any;
    };
    setGlobal(data: object): {
        entries: EntryStore;
        debug: (data: string | object) => void;
        info: (data: string | object) => void;
        warn: (data: string | object) => void;
        error: (data: string | object) => void;
        setLogLevel(level: LogLevel): void;
        setSilent(silent: boolean): void;
        setTransport(transport: Transport): /*elided*/ any;
        setGlobal(data: object): /*elided*/ any;
        runInTest(expect: ExtendableExpect): /*elided*/ any;
        expect(info: LogEntry): /*elided*/ any;
    };
    runInTest(expect: ExtendableExpect): {
        entries: EntryStore;
        debug: (data: string | object) => void;
        info: (data: string | object) => void;
        warn: (data: string | object) => void;
        error: (data: string | object) => void;
        setLogLevel(level: LogLevel): void;
        setSilent(silent: boolean): void;
        setTransport(transport: Transport): /*elided*/ any;
        setGlobal(data: object): /*elided*/ any;
        runInTest(expect: ExtendableExpect): /*elided*/ any;
        expect(info: LogEntry): /*elided*/ any;
    };
    expect(info: LogEntry): {
        entries: EntryStore;
        debug: (data: string | object) => void;
        info: (data: string | object) => void;
        warn: (data: string | object) => void;
        error: (data: string | object) => void;
        setLogLevel(level: LogLevel): void;
        setSilent(silent: boolean): void;
        setTransport(transport: Transport): /*elided*/ any;
        setGlobal(data: object): /*elided*/ any;
        runInTest(expect: ExtendableExpect): /*elided*/ any;
        expect(info: LogEntry): /*elided*/ any;
    };
};
export {};