export declare const evaluateFormula: (formula: string, value: number) => any;
interface DataEntry {
    id: string;
    timestamp: string | Date;
    [key: string]: string | number | Date;
}
export declare const resampleData: (data: DataEntry[], interval: string, aggregationMethod: string) => DataEntry[];
export declare const filterDataByTimePeriod: (data: DataEntry[], period: string, customRange?: any) => DataEntry[];
export declare const formatTimePeriodLabel: (period: string, customDateRange?: any) => string;
export declare const formatTimeInterval: (timestamp: string | Date, interval: string) => string;
export declare const generateMockData: (selectedMeasurements: any[], sampleCount?: number) => DataEntry[];
export declare const transformToDeviceView: (data: DataEntry[], selectedMeasurements: any[], period: string, customRange: any, devices: any[]) => {
    [key: string]: string | number | null;
    id: string;
    name: string;
}[];
export {};