/**
 * A renderer-agnostic index buffer.
 * Manages a typed array of vertex indices for indexed drawing.
 * {@link WebGLIndexBuffer} extends this with GL-specific bind/upload operations.
 * @ignore
 */
export default class IndexBuffer {
    /**
     * @param {number} maxIndices - maximum number of indices this buffer can hold
     * @param {boolean} [useUint32=false] - use Uint32 indices instead of Uint16
     */
    constructor(maxIndices: number, useUint32?: boolean);
    data: Uint16Array<ArrayBuffer> | Uint32Array<ArrayBuffer>;
    /**
     * the current number of indices in the buffer
     * @type {number}
     */
    length: number;
    /**
     * Fill the buffer with a repeating quad index pattern [0,1,2, 2,1,3, 4,5,6, ...]
     * @param {number} maxQuads - number of quads to generate indices for
     */
    fillQuadPattern(maxQuads: number): void;
    /**
     * Reset the index count
     */
    clear(): void;
    /**
     * Add indices to the buffer, rebased by the given vertex offset
     * @param {number[]} indices - source indices to add
     * @param {number} vertexOffset - value to add to each index
     */
    add(indices: number[], vertexOffset: number): void;
    /**
     * Add pre-computed absolute indices to the buffer (no rebasing)
     * @param {number[]} indices - absolute index values to add
     */
    addRaw(indices: number[]): void;
}
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