import type { ModelDefinition } from './registry-types.js';
export declare function getProviderLookupCandidates(providerName: string, aliases: Readonly<Record<string, string>>): string[];
export declare function findModelDefinition(modelId: string, registry: readonly ModelDefinition[]): ModelDefinition | undefined;
export declare function findModelDefinitionForProvider(modelId: string, providerName: string, registry: readonly ModelDefinition[], aliases: Readonly<Record<string, string>>): ModelDefinition | undefined;
export declare function buildModelRegistry(input: {
    readonly customModels: readonly ModelDefinition[];
    readonly runtimeModels: readonly ModelDefinition[];
    readonly syntheticModels: readonly ModelDefinition[];
    readonly catalogModels: readonly ModelDefinition[];
    readonly discoveredModels: readonly ModelDefinition[];
    readonly suppressedCatalogRegistryKeys: ReadonlySet<string>;
    /**
     * Models sourced directly from a provider's own live/dated-static model
     * source (see `live-model-discovery.ts`) rather than the shared
     * third-party catalog. Takes priority over `catalogModels` for the same
     * registryKey, the provider's own truth beats a third-party snapshot
     * that may lag behind, but only fills gaps: an entry already present in
     * `catalogModels` keeps the richer catalog-sourced definition (pricing,
     * measured context window, etc).
     */
    readonly providerNativeModels?: readonly ModelDefinition[] | undefined;
}): ModelDefinition[];
export interface CustomModelDiff {
    readonly added: string[];
    readonly removed: string[];
    readonly updated: string[];
    /** One warning per custom model whose registryKey collides with a catalog model. */
    readonly collisionWarnings: string[];
}
/**
 * Compute the added/removed/updated diff between a previous and next set of
 * custom models, plus catalog-collision warnings. Extracted from
 * ProviderRegistry.loadCustomProviders() so that method stays a thin
 * orchestration wrapper.
 */
export declare function diffCustomModels(previousModels: readonly ModelDefinition[], nextModels: readonly ModelDefinition[], catalogModels: readonly ModelDefinition[]): CustomModelDiff;
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