export type LumenColumnType = 'text' | 'number' | 'date' | 'boolean' | 'image' | 'richtext' | 'url' | 'unknown';
export interface LumenColumn<T = unknown> {
    field: keyof T & string;
    header: string;
    type?: LumenColumnType;
    width?: number;
    minWidth?: number;
    sortable?: boolean;
    cell?: (value: unknown, row: T) => unknown;
}
export interface ResolvedColumn<T = unknown> extends LumenColumn<T> {
    resolvedType: LumenColumnType;
    resolvedWidth: number;
    /**
     * Stable, unique key per resolved column. Equals `field` when fields are
     * unique; otherwise suffixed with the column index to keep React keys safe
     * (e.g. `title__1`). Use this for `key={col._lumKey}` in renderers.
     */
    _lumKey: string;
}
export declare function inferColumnType(field: string, rows: Record<string, unknown>[]): LumenColumnType;
export declare function resolveColumns<T>(columns: LumenColumn<T>[], rows: T[]): ResolvedColumn<T>[];
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