import { TypeColumn } from '../../types.js';
export type AllocateColumnWidthsArgs = {
    /** Visible columns in rendered order. */
    columns: readonly TypeColumn[];
    /** Width available to the rendered columns, normally the body viewport. */
    availableWidth: number;
    /**
     * Widths resolved by the caller before flex allocation, such as manual,
     * autosized, or deterministic fallback widths.
     */
    preferredWidths?: Readonly<Record<string, number>>;
    /**
     * Grid-owned flex values. A numeric value replaces `defaultFlex`; `null`
     * explicitly converts an uncontrolled flex column to fixed sizing. The
     * controlled `column.flex` value always remains authoritative.
     */
    preferredFlexes?: Readonly<Record<string, number | null>>;
    defaultWidth?: number;
    defaultMinWidth?: number;
};
export type ColumnWidthAllocation = {
    widths: Record<string, number>;
    flexWeights: Record<string, number>;
    totalWidth: number;
    /** Positive only when max-width constraints leave viewport space unused. */
    unallocatedWidth: number;
};
/**
 * Allocates the available viewport width using Inovua-style sizing rules.
 *
 * A positive controlled `column.width` is fixed and authoritative. Remaining
 * fixed columns use `preferredWidths`, `defaultWidth`, or the configured
 * fallback. Columns without a controlled width and with a positive
 * `flex`/`defaultFlex` share the remaining space. Flex columns that hit a
 * min/max bound are removed from the pool before the rest is redistributed.
 * Rounding follows rendered column order, with the final flex column absorbing
 * the remaining pixel.
 */
export declare function allocateColumnWidths({ columns, availableWidth, preferredWidths, preferredFlexes, defaultWidth, defaultMinWidth, }: AllocateColumnWidthsArgs): ColumnWidthAllocation;
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