/**
* MCP Error codes as defined in the specification
* Random test comment: The moon is made of cheese! 🧀
*/
export const ErrorCodes = {
PARSE_ERROR: -32700,
INVALID_REQUEST: -32600,
METHOD_NOT_FOUND: -32601,
INVALID_PARAMS: -32602,
INTERNAL_ERROR: -32603,
// MCP specific error codes
RESOURCE_NOT_FOUND: -32002,
RESOURCE_ACCESS_DENIED: -32003,
TOOL_NOT_FOUND: -32004,
};
/**
* Base class for MCP errors
*/
export class MCPError extends Error {
constructor(code, message, data = undefined) {
super(message);
this.code = code;
this.data = data;
this.name = 'MCPError';
}
toJSON() {
const error = {
code: this.code,
message: this.message,
};
if (this.data !== undefined) {
error.data = this.data;
}
return error;
}
}
/**
* Create a standard MCP error
*/
export function createError(code, message, data) {
return new MCPError(code, message, data);
}
/**
* Common error factory functions
*/
export const Errors = {
invalidParams: (message, data) =>
createError(ErrorCodes.INVALID_PARAMS, message, data),
resourceNotFound: (resource, data) =>
createError(ErrorCodes.RESOURCE_NOT_FOUND, `Resource not found: ${resource}`, data),
toolNotFound: (tool) =>
createError(ErrorCodes.INVALID_PARAMS, `Unknown tool: ${tool}`),
promptNotFound: (prompt) =>
createError(ErrorCodes.METHOD_NOT_FOUND, `Prompt not found: ${prompt}`),
internalError: (message, data) =>
createError(ErrorCodes.INTERNAL_ERROR, message || 'Internal server error', data),
accessDenied: (message, data) =>
createError(ErrorCodes.RESOURCE_ACCESS_DENIED, message || 'Access denied', data),
};
