import { EntityNode, ManifestProgram } from './types';
/**
 * Entity composition expander: resolves entity inheritance (extends) and mixins,
 * merging properties, relationships, constraints, policies, and command names.
 *
 * Precedence: parent → mixins → own; own wins on name conflict.
 * Own-only: transitions, approvals, reactions, store, key, alternateKeys,
 *           versionProperty, versionAtProperty, timestamps, realtime.
 */
export interface EntityIndex {
    [name: string]: EntityNode;
}
export declare function expandEntityComposition(program: ManifestProgram, emitDiagnostic: (severity: 'error' | 'warning', message: string) => void, 
/**
 * Optional project-wide index of entities declared in OTHER files of the same
 * compile unit. Used by the multi-file compiler so that an entity can `extends`
 * or `mixin` a base declared in a different file. These external entities are
 * only consulted for composition resolution (parent/mixin lookup); the local
 * file's own entities always take precedence, and externals never count toward
 * the local duplicate-declaration check (cross-file duplicates are validated
 * separately by the multi-compiler).
 */
externalEntities?: EntityIndex): ManifestProgram;
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