mongodb-js/mongodb-mcp-server

[Bug]: failed to initialize server: (node:1404546) ExperimentalWarning: Importing JSON modules is an experimental feature

Closed this issue · 4 comments

medeirosjoaquim commented

Version

0.1.3

App

  • Cursor
  • Windsurf
  • VSCode
  • VSCode Insiders
  • Claude Desktop
  • Other

Affected Models (if applicable)

  • Claude 3.5 Sonnet
  • Claude 3.7 Sonnet
  • GPT-4a
  • o4-mini
  • Other

Bug Description

Can't use in Windsurf or Claude Code. Tried with node v.20 and node v.24, on macOs and Linux

Error:

Error: failed to initialize server: (node:1404546) ExperimentalWarning: Importing JSON modules is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)
/home/user/.npm/_npx/191c568aa03d4fb8/node_modules/@mongodb-js/oidc-plugin/dist/plugin.js:44 const openid_client_1 = require("openid-client"); ^ Error [ERR_REQUIRE_ESM]: require() of ES Module
gagik commented

Could you confirm that the npx version you're using is also updated when you switched to the v24 Node version?

The error seems related to the older Node versions so it seems like your NodeJS setup may not be selecting the correct one.

  • 😕1
github-actions commented

Thanks for opening this issue. The ticket MCP-77 was created for internal tracking.

pigd0g commented

I needed to upgrade my node version to at least 22.12

  • 👍1
nirinchev commented

With 0.2.0 we're correctly listing the minimum supported node version.