Suppress console output during environment variable loading (#18)

Author: islam3zzat

.changeset/nine-ends-thank.md

@@ -0,0 +1,5 @@
+---
+"@commercetools/mcp-essentials": patch
+---
+
+Suppress dotenv logs to avoid pushing messages to the stdio.

modelcontextprotocol/jest.config.ts

@@ -4,8 +4,9 @@ const config: Config = {
   preset: 'ts-jest',
   testEnvironment: 'node',
   roots: ['<rootDir>/src'],
-  testMatch: ['**/test/**/*.ts?(x)'],
+  testMatch: ['**/test/**/*.test.ts?(x)'],
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  setupFilesAfterEnv: ['<rootDir>/src/test/setup.ts'],
 };
 
 export default config;

modelcontextprotocol/src/index.ts

@@ -271,7 +271,9 @@ function handleError(error: any) {
 }
 
 export async function main() {
-  require('dotenv').config();
+  require('dotenv').config({
+    quiet: true,
+  });
   const {options, env} = parseArgs(process.argv.slice(2));
 
   // Create the CommercetoolsAgentEssentials instance

modelcontextprotocol/src/test/setup.ts

@@ -0,0 +1,33 @@
+const originalConsole = {
+  log: console.log,
+  error: console.error,
+  warn: console.warn,
+  info: console.info,
+  debug: console.debug,
+};
+
+beforeEach(() => {
+  jest.spyOn(console, 'log').mockImplementation(() => {});
+  jest.spyOn(console, 'error').mockImplementation(() => {});
+  jest.spyOn(console, 'warn').mockImplementation(() => {});
+  jest.spyOn(console, 'info').mockImplementation(() => {});
+  jest.spyOn(console, 'debug').mockImplementation(() => {});
+});
+
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
+export const enableConsoleOutput = () => {
+  jest.restoreAllMocks();
+};
+
+export const disableConsoleOutput = () => {
+  jest.spyOn(console, 'log').mockImplementation(() => {});
+  jest.spyOn(console, 'error').mockImplementation(() => {});
+  jest.spyOn(console, 'warn').mockImplementation(() => {});
+  jest.spyOn(console, 'info').mockImplementation(() => {});
+  jest.spyOn(console, 'debug').mockImplementation(() => {});
+};
+
+export {originalConsole};