export type ModelCatalogRef = {
    provider: string;
    modelId: string;
};
export type ProviderModelRef = {
    provider: string;
    model: string;
};
/** Normalize provider ids for catalog refs. */
export declare function normalizeModelCatalogProviderId(provider: string): string;
/** Build a provider/model catalog reference. */
export declare function buildModelCatalogRef(provider: string, modelId: string): string;
/** Parse a strict provider/model reference without normalizing either segment. */
export declare function parseProviderModelRef(value: string): ProviderModelRef | null;
/** Parse a strict provider/model catalog reference. */
export declare function parseModelCatalogRef(value: string): ModelCatalogRef | null;
/** Build a case-insensitive merge key for provider/model rows. */
export declare function buildModelCatalogMergeKey(provider: string, modelId: string): string;