import { Primitive, Transform } from '@gltf-transform/core';
/** Options for the {@link weld} function. */
export interface WeldOptions {
    /** Whether to overwrite existing indices. */
    overwrite?: boolean;
    /**
     * Whether to perform cleanup steps after completing the operation. Recommended, and enabled by
     * default. Cleanup removes temporary resources created during the operation, but may also remove
     * pre-existing unused or duplicate resources in the {@link Document}. Applications that require
     * keeping these resources may need to disable cleanup, instead calling {@link dedup} and
     * {@link prune} manually (with customized options) later in the processing pipeline.
     * @experimental
     */
    cleanup?: boolean;
}
export declare const WELD_DEFAULTS: Required<WeldOptions>;
/**
 * Welds {@link Primitive Primitives}, merging bitwise identical vertices. When
 * merged and indexed, data is shared more efficiently between vertices. File size
 * can be reduced, and the GPU uses the vertex cache more efficiently.
 *
 * Example:
 *
 * ```javascript
 * import { weld, getSceneVertexCount, VertexCountMethod } from '@gltf-transform/functions';
 *
 * const scene = document.getDefaultScene();
 * const srcVertexCount = getSceneVertexCount(scene, VertexCountMethod.UPLOAD);
 * await document.transform(weld());
 * const dstVertexCount = getSceneVertexCount(scene, VertexCountMethod.UPLOAD);
 * ```
 *
 * @category Transforms
 */
export declare function weld(_options?: WeldOptions): Transform;
/**
 * Welds a {@link Primitive}, merging bitwise identical vertices. When merged
 * and indexed, data is shared more efficiently between vertices. File size can
 * be reduced, and the GPU uses the vertex cache more efficiently.
 *
 * Example:
 *
 * ```javascript
 * import { weldPrimitive, getMeshVertexCount, VertexCountMethod } from '@gltf-transform/functions';
 *
 * const mesh = document.getRoot().listMeshes()
 * 	.find((mesh) => mesh.getName() === 'Gizmo');
 *
 * const srcVertexCount = getMeshVertexCount(mesh, VertexCountMethod.UPLOAD);
 *
 * for (const prim of mesh.listPrimitives()) {
 *   weldPrimitive(prim);
 * }
 *
 * const dstVertexCount = getMeshVertexCount(mesh, VertexCountMethod.UPLOAD);
 * ```
 */
export declare function weldPrimitive(prim: Primitive, _options?: WeldOptions): void;