type Fetch = typeof fetch;
export interface GitHubClientOptions {
    apiToken?: string;
    apiUrl?: string;
    fetch?: Fetch;
}
export interface GitHubRepository {
    default_branch: string;
}
export interface GitHubRef {
    ref?: string;
    object: {
        sha: string;
    };
}
export interface GitHubFile {
    sha: string;
    content?: string;
    encoding?: string;
}
export interface GitHubPullRequest {
    number: number;
    state?: string;
    html_url: string;
    merged_at?: string | null;
}
export interface PutFileInput {
    repository: string;
    path: string;
    branch: string;
    content: string;
    message: string;
    sha?: string;
}
export interface CreatePullRequestInput {
    repository: string;
    title: string;
    head: string;
    base: string;
    body?: string;
}
export declare class GitHubHttpError extends Error {
    readonly status: number;
    readonly path: string;
    readonly responseText: string;
    constructor(status: number, path: string, responseText: string);
}
export declare class GitHubNetworkError extends Error {
    readonly url: string;
    readonly cause: unknown;
    constructor(url: string, cause: unknown);
}
export declare class GitHubClient {
    private readonly apiToken?;
    private readonly apiUrl;
    private readonly fetchImpl;
    constructor(options?: GitHubClientOptions);
    getRepository(repository: string): Promise<GitHubRepository>;
    getBranchRef(repository: string, branch: string): Promise<GitHubRef>;
    createBranch(repository: string, branch: string, sha: string): Promise<unknown>;
    getFile(repository: string, path: string, branch: string): Promise<GitHubFile | null>;
    putFile(input: PutFileInput): Promise<unknown>;
    findOpenPullRequest(repository: string, branch: string): Promise<GitHubPullRequest | null>;
    getPullRequest(repository: string, number: number): Promise<GitHubPullRequest>;
    createPullRequest(input: CreatePullRequestInput): Promise<GitHubPullRequest>;
    private request;
}
export declare function decodeGitHubFileContent(file: GitHubFile | null): string | null;
export {};
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