import type { ModelProviderCapabilities } from "./types/model-config.js";
export interface ModelProviderRuntimeOptions {
    fetchFn?: typeof fetch;
    env?: NodeJS.ProcessEnv;
}
export interface ModelProviderRuntime {
    fetchFn: typeof fetch;
    env: NodeJS.ProcessEnv;
}
export declare function modelProviderRuntime({ fetchFn, env, }?: ModelProviderRuntimeOptions): ModelProviderRuntime;
export declare function modelProviderCapabilities(overrides?: Partial<ModelProviderCapabilities>): ModelProviderCapabilities;
export declare function apiKeyFromEnvFile({ env, keyNames, fileNames, defaultValue, fileErrorName, }: {
    env: NodeJS.ProcessEnv;
    keyNames: string[];
    fileNames: string[];
    defaultValue?: string;
    fileErrorName: string;
}): string | undefined;
export declare function joinUrlPath(basePath: string, segment: string): string;
export declare function stringFrom(value: unknown, fallback: string): string;
export declare function numberFrom(value: unknown): number;