GitHub MCP Server

// GitHub API error classes export class GitHubError extends Error { constructor(message: string) { super(message); this.name = 'GitHubError'; } } export class GitHubValidationError extends GitHubError { response?: any; constructor(message: string, response?: any) { super(message); this.name = 'GitHubValidationError'; this.response = response; } } export class GitHubResourceNotFoundError extends GitHubError { constructor(message: string) { super(message); this.name = 'GitHubResourceNotFoundError'; } } export class GitHubAuthenticationError extends GitHubError { constructor(message: string) { super(message); this.name = 'GitHubAuthenticationError'; } } export class GitHubPermissionError extends GitHubError { constructor(message: string) { super(message); this.name = 'GitHubPermissionError'; } } export class GitHubRateLimitError extends GitHubError { constructor(message: string) { super(message); this.name = 'GitHubRateLimitError'; } } export class GitHubConflictError extends GitHubError { constructor(message: string) { super(message); this.name = 'GitHubConflictError'; } } // Type guard to check if an error is a GitHubError export function isGitHubError(error: any): error is GitHubError { return ( error instanceof GitHubError || error instanceof GitHubValidationError || error instanceof GitHubResourceNotFoundError || error instanceof GitHubAuthenticationError || error instanceof GitHubPermissionError || error instanceof GitHubRateLimitError || error instanceof GitHubConflictError ); } import { Response } from 'node-fetch'; // Helper function to handle GitHub API responses export async function handleGitHubResponse(response: Response) { if (!response.ok) { const errorData = await response.json().catch(() => null) as { message?: string } | null; const errorMessage = errorData?.message || `HTTP error ${response.status}`; if (response.status === 400) { throw new GitHubValidationError(errorMessage, errorData); } else if (response.status === 401) { throw new GitHubAuthenticationError(errorMessage); } else if (response.status === 403) { if (response.headers.get('x-ratelimit-remaining') === '0') { throw new GitHubRateLimitError('Rate limit exceeded'); } throw new GitHubPermissionError(errorMessage); } else if (response.status === 404) { throw new GitHubResourceNotFoundError(errorMessage); } else if (response.status === 409) { throw new GitHubConflictError(errorMessage); } else { throw new GitHubError(errorMessage); } } return response; }