/**
 * YAML-based semantic layer loader (browser-safe).
 *
 * This module contains only pure string/object parsing and serialization —
 * no filesystem access — so it is safe to include in browser bundles. The
 * node-only directory loaders (`loadSemanticLayerFromDir`) that read from disk
 * live in the sibling `yaml-loader.node.ts` to keep `node:fs`/`node:path` out
 * of the browser-reachable import graph.
 */
import { SemanticLayer, type MetricDefinition, type DimensionDefinition } from './semantic-layer.js';
/**
 * Load a SemanticLayer from pre-read file contents (no filesystem access needed).
 * Useful for browser contexts or when files are already loaded.
 */
export declare function loadSemanticLayerFromConfig(files: Array<{
    path: string;
    content: string;
}>): SemanticLayer;
/**
 * Serialize a MetricDefinition back into stable semantic-layer YAML.
 * Used by governance flows that propose human-reviewed semantic changesets.
 */
export declare function serializeMetricDefinitionToYaml(metric: MetricDefinition): string;
/**
 * Serialize a DimensionDefinition back into stable semantic-layer YAML.
 * This mirrors the metric serializer so future composting can propose reusable
 * dimensions without hand-building YAML strings.
 */
export declare function serializeDimensionDefinitionToYaml(dimension: DimensionDefinition): string;
/**
 * Expand a raw YAML document into individual definition records. Shared by the
 * browser-safe config loader and the node-only directory loader.
 */
export declare function expandDefinitions(raw: Record<string, unknown>, collectionKeys: string[]): Record<string, unknown>[];
/** Add a definition to the layer only when it has a non-empty name. Shared helper. */
export declare function addIfNamed<T extends {
    name: string;
}>(item: T, add: (item: T) => void): void;
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