import { DataType } from 'apache-arrow';
import { CosmographConfig } from "..";
import { SizeAccessorFn } from "../config/interfaces/data";
export declare enum LinkWidthStrategy {
    /**
     * Uses the sum of numeric values between the same source and target points in {@link CosmographConfig.linkWidthBy linkWidthBy} to determine link widths and interpolates them from {@link CosmographConfig.linkWidthRange linkWidthRange}.
     * - Has effect only if {@link CosmographConfig.linkWidthBy linkWidthBy} provided and contains numeric data.
     */
    Sum = "sum",
    /**
      * Uses the average of numeric values between the same source and target points in {@link CosmographConfig.linkWidthBy linkWidthBy} to determine link widths and interpolates them from {@link CosmographConfig.linkWidthRange linkWidthRange}.
      * - Has effect only if {@link CosmographConfig.linkWidthBy linkWidthBy} provided and contains numeric data.
      */
    Average = "average",
    /**
      * Uses the count of links between the same source and target points in {@link CosmographConfig.linkWidthBy linkWidthBy} to determine link widths and interpolates them from {@link CosmographConfig.linkWidthRange linkWidthRange}.
      */
    Count = "count",
    /**
      * Directly uses {@link CosmographConfig.linkWidthBy linkWidthBy} column values as widths.
      * - Treats numeric values in {@link CosmographConfig.linkWidthBy linkWidthBy} as link widths in pixels 1:1 without interpolation if they are numbers
      * - If {@link CosmographConfig.linkWidthByFn linkWidthByFn} exists, applies it to transform {@link CosmographConfig.linkWidthBy linkWidthBy} values into custom widths with it
      * - Falls back to {@link CosmographConfig.linkDefaultWidth linkDefaultWidth} if invalid width
      * - If neither {@link CosmographConfig.linkWidthBy} nor {@link CosmographConfig.linkWidthByFn} exist, sets all links width to {@link CosmographConfig.linkDefaultWidth linkDefaultWidth}
      */
    Direct = "direct",
    /**
     * Sets all links width to the same value specified by {@link CosmographConfig.linkDefaultWidth linkDefaultWidth}.
     */
    Single = "single"
}
export type LinkWidthStrategyType = `${LinkWidthStrategy}`;
export declare const getActiveLinkWidthFn: (strategy: LinkWidthStrategyType, config: CosmographConfig, data: number[]) => SizeAccessorFn;
/**
   * Determines the optimal width strategy for points based on the configuration and data summary.
   *
   * @param config - The configuration object of the Cosmograph.
   * @param pointsSummary - Optional summaries of points.
   * @returns The resolved {@link LinkWidthStrategyType} or `undefined` if using custom sizing
   */
export declare function resolveOptimalLinkWidthStrategy(config: CosmographConfig, dataColumnType?: DataType): LinkWidthStrategyType;