import { type AiConfig } from './config/schema.js';
export interface AiResolved {
    readonly enabled: boolean;
    readonly provider: 'anthropic' | 'openai';
    readonly model: string;
    readonly apiKeyEnv: string;
    readonly baseUrl: string | undefined;
    readonly headers: Readonly<Record<string, string>>;
    readonly requireApiKey: boolean;
    readonly logLines: number;
    readonly maxDiffBytes: number;
}
export declare class AiError extends Error {
    constructor(message: string);
}
export type AnthropicAuthKind = 'api-key' | 'oauth';
export interface AnthropicAuth {
    readonly token: string;
    readonly kind: AnthropicAuthKind;
    readonly sourceEnv: string;
}
export declare const ANTHROPIC_OAUTH_ENVS: ReadonlyArray<string>;
export declare function classifyAnthropicToken(token: string): AnthropicAuthKind;
export declare function lookupAnthropicAuth(env: NodeJS.ProcessEnv, apiKeyEnv: string): AnthropicAuth | undefined;
export declare const ANTHROPIC_OAUTH_BETA = "oauth-2025-04-20";
export declare function resolveAiConfig(user: AiConfig | undefined): AiResolved;
export declare function autoDetectProvider(env?: NodeJS.ProcessEnv): AiResolved | undefined;
export declare function buildPrompt(opts: {
    readonly diff: string;
    readonly log: string;
    readonly maxDiffBytes: number;
    readonly file?: string;
}): string;
export declare function generateCommitMessage(opts: {
    readonly resolved: AiResolved;
    readonly env?: NodeJS.ProcessEnv;
    readonly cwd?: string;
    readonly diff?: string;
    readonly file?: string;
}): Promise<string>;
export declare function extractFirstLine(text: string): string;
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