import { ShapeMesh } from 'brepjs';
import { EvaluatedNodeLike, PreviewModelPayload, PreviewTreeNode } from 'brepjs-viewer';
export interface PreviewBuild {
    readonly payload: PreviewModelPayload;
    /** Whole-model merge in ShapeMesh form — the GLB export input, derived from the
     *  same single merge the viewer payload uses. */
    readonly merged: ShapeMesh;
    readonly ok: boolean;
}
/**
 * Load the module through the registered hook (same realm/kernel as verify) and
 * evaluate it into a preview payload. Contract: `export default` a value or a
 * (possibly async) function returning one — a families element tree, an already
 * resolved tree, or a plain shape; `Result` wrappers are unwrapped.
 */
export declare function evaluatePreview(entryPath: string, opts?: {
    fresh?: boolean;
}): Promise<PreviewBuild>;
/**
 * Resolve the ESM entry of the PROJECT's brepjs-families install, walking from the
 * entry module. A globally installed CLI is not inside the project's node_modules, so
 * a bare import would miss (or load the wrong copy); resolving from the entry lands on
 * the same file URL the model itself imports — one module instance, matching runtime
 * identities.
 */
export declare function resolveFamiliesEntry(entryPath: string): string | undefined;
/** Per-element stage shared by preview (which merges) and the .3dm exporter
 *  (which needs each element separately, named and layered). */
export interface EvaluatedElements {
    readonly nodes: ReadonlyMap<string, EvaluatedNodeLike>;
    readonly tree: PreviewTreeNode;
}
export declare function evaluateElements(entryPath: string, opts?: {
    fresh?: boolean;
}): Promise<EvaluatedElements>;