import type { AnyArray } from 'is-any-array';
/**
 * Verify that `data` is an object of x,y arrays.
 * Throws an error if it's not.
 * @param data
 * @param options
 * @param options.minLength
 */
export declare function xyCheck(data: unknown, options?: {
    /** Minimum length. */
    minLength?: number;
}): asserts data is {
    x: AnyArray;
    y: AnyArray;
};
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