class StdioClientTransport { constructor() { this.start = jest.fn().mockResolvedValue(undefined) this.close = jest.fn().mockResolvedValue(undefined) this.stderr = { on: jest.fn(), } } } class StdioServerParameters { constructor() { this.command = "" this.args = [] this.env = {} } } module.exports = { StdioClientTransport, StdioServerParameters, }