import { type ReadonlyVec } from "@thi.ng/vectors/api";
import type { Mat } from "./api.js";
/**
 * Converts quaternion into 4x4 matrix with optional 3D translation offset `t`,
 * then writes result to `out`.
 *
 * @param out -
 * @param q -
 */
export declare const quatToMat44: (out: Mat | null, a: ReadonlyVec, t?: ReadonlyVec) => import("@thi.ng/vectors").Vec<number>;
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