import type { View } from "@perspective-dev/client";
export interface ColumnData {
    type: "float32" | "float64" | "int32" | "string";
    values?: Float32Array | Float64Array | Int32Array;
    /**
     * Dictionary key indices for string columns.
     */
    indices?: Int32Array;
    /**
     * Dictionary values for string columns.
     */
    dictionary?: string[];
    /**
     * Arrow validity bitfield (1 bit per row).
     */
    valid?: Uint8Array;
}
export type ColumnDataMap = Map<string, ColumnData>;
export interface TypedArrayWindowOptions {
    start_row?: number;
    end_row?: number;
    start_col?: number;
    end_col?: number;
    float32?: boolean;
}
/**
 * Fetches all columns from a View using `with_typed_arrays` and
 * builds a `ColumnDataMap`. The `values` typed arrays and `valid`
 * bitmaps are zero-copy views into WASM memory and remain valid only
 * for the duration of the `render` callback — if `render` returns a
 * `Promise`, the underlying `with_typed_arrays` call awaits it before
 * releasing the backing Arrow buffer. Callers must not retain any
 * `ColumnData` reference past `render`'s resolution.
 */
export declare function viewToColumnDataMap(view: View, render: (data: ColumnDataMap) => void | Promise<void>, options?: TypedArrayWindowOptions): Promise<void>;