import { McpError, ErrorCode } from "@modelcontextprotocol/sdk/types.js";
export class CharityAPIError extends Error {
constructor(
message: string,
public statusCode?: number,
public originalError?: Error
) {
super(message);
this.name = 'CharityAPIError';
}
}
export class ValidationError extends Error {
constructor(message: string, public field?: string) {
super(message);
this.name = 'ValidationError';
}
}
export function handleMCPError(error: unknown): McpError {
if (error instanceof ValidationError) {
return new McpError(
ErrorCode.InvalidParams,
`Invalid parameter${error.field ? ` '${error.field}'` : ''}: ${error.message}`
);
}
if (error instanceof CharityAPIError) {
if (error.statusCode === 404) {
return new McpError(
ErrorCode.InvalidParams,
"Charity not found with provided EIN"
);
}
if (error.statusCode === 429) {
return new McpError(
ErrorCode.InternalError,
"Rate limit exceeded. Please try again later."
);
}
return new McpError(
ErrorCode.InternalError,
`Charity API error: ${error.message}`
);
}
// Generic error handling
return new McpError(
ErrorCode.InternalError,
error instanceof Error ? error.message : "Unknown error occurred"
);
}
export function setupErrorHandlers() {
process.on('uncaughtException', (error) => {
console.error('Uncaught Exception:', error);
process.exit(1);
});
process.on('unhandledRejection', (reason, promise) => {
console.error('Unhandled Rejection at:', promise, 'reason:', reason);
});
}
