/**
 * @template T
 * @param {QuadTreeDatum<T>[]} result
 * @param {number} result_offset
 * @param {QuadTreeNode<T>} tree
 * @param {number} x
 * @param {number} y
 * @param {number} radius
 * @param {function(data:T):boolean} [predicate]
 * @param {*} [predicateContext]
 * @returns {number}
 */
export function qt_match_data_by_circle<T>(result: QuadTreeDatum<T>[], result_offset: number, tree: QuadTreeNode<T>, x: number, y: number, radius: number, predicate: any, predicateContext?: any): number;
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