import { type SceneDocumentData } from "@skenora/contracts";
import { type ScenePlanDiagnostic } from "../diagnostics/diagnostics.js";
import { type FragmentFlowReference } from "./flows.js";
import { type SceneFragmentContext, type SceneFragmentData, type SceneFragmentValidationResult } from "./types.js";
export declare function validateSceneFragment(input: unknown, context?: SceneFragmentContext): SceneFragmentValidationResult;
/** An ephemeral native validation scaffold; never returned or committed. */
export declare function fragmentCandidate(fragment: SceneFragmentData): SceneDocumentData;
export declare function validateReferenceTargets(fragment: Pick<SceneFragmentData, "entities" | "materials" | "textureAnimations" | "cameraPaths" | "initialVariables" | "animationTracks" | "animationClips" | "extensions">, references: readonly FragmentFlowReference[], diagnostics: ScenePlanDiagnostic[]): void;
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