/**
 * GitHub OAuth using Device Flow
 *
 * Device Flow is perfect for CLI applications:
 * https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/authorizing-oauth-apps#device-flow
 *
 * Flow:
 * 1. Request device code
 * 2. Show user_code and verification_uri to user
 * 3. Poll for access token
 * 4. Save token to .env
 */
export interface DeviceCodeResponse {
    device_code: string;
    user_code: string;
    verification_uri: string;
    expires_in: number;
    interval: number;
}
export interface TokenResponse {
    access_token: string;
    token_type: string;
    scope: string;
}
/**
 * Main OAuth flow - returns GitHub token
 */
export declare function githubOAuth(): Promise<string>;
/**
 * Save token to .env file
 * Uses atomic write operation to avoid TOCTOU race condition
 *
 * @deprecated Use credentials.ts instead for OAuth-based authentication
 * This function is kept for backward compatibility with existing code
 */
export declare function saveTokenToEnv(token: string): Promise<void>;
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