import { type AnyModel, type Provider, type ProviderHeaders } from "@bastani/pi-ai";
import type { ModelConfig, ModelsJsonProvider } from "./model-config.ts";
import type { AuthStatus, ProviderConfigInput } from "./provider-composer-internal.ts";
export type { AuthStatus, ExtensionOAuthConfig, ProviderConfigInput } from "./provider-composer-internal.ts";
export { clearApiKeyCache } from "./provider-composer-internal.ts";
export declare function validateExtensionProvider(providerId: string, base: Provider | undefined, modelsConfig: ModelsJsonProvider | undefined, extension: ProviderConfigInput): void;
/** Compose built-in, models.json, and extension layers without reading credentials. */
export declare function composeModelProvider(providerId: string, base: Provider | undefined, modelConfig: ModelConfig, extension: ProviderConfigInput | undefined): Provider;
export declare function resolveConfiguredModelHeaders(model: AnyModel, config: ModelsJsonProvider | undefined, extension: ProviderConfigInput | undefined, env?: Record<string, string>): Record<string, string> | undefined;
export interface CompatibilityRequestConfig {
    headers?: ProviderHeaders;
    authHeader: boolean;
}
export declare function resolveCompatibilityRequestConfig(model: AnyModel, config: ModelsJsonProvider | undefined, extension: ProviderConfigInput | undefined): CompatibilityRequestConfig;
export declare function configuredRequestAuthStatus(config: ModelsJsonProvider | undefined, extension: ProviderConfigInput | undefined): AuthStatus | undefined;
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