type CsvMetadata = Record<string, string>;
type CsvData = any[];
export declare function readJson<T>(filepath: string): T;
export declare function writeJson<T>(filepath: string, json: T): void;
export declare function fromCsv<T extends CsvData>(str: string): {
    data: T;
    metadata: CsvMetadata;
};
export declare function toCsv<T extends CsvData>(data: T, metadata?: CsvMetadata): string;
export declare function toCsvMetadata(metadata: Record<string, string>): string;
export {};
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