Runtime error with latest version of Mastra core

[daneatmastra]

This issue was created from Discord post 1446154222411317419:

I recently updated to a recent version of @mastra/core 0.23.3 and I get the following error at runtime, which never appeared before:

/app/node_modules/.pnpm/@mastra+core@0.23.3_@sinclair+typebox@0.34.41_encoding@0.1.13_openapi-types@12.1.3_react@19.2_z2dqksn5fjdorsfe3momgu443q/node_modules/@mastra/core/dist/chunk-5KNLBUBH.cjs:97
- Focus on content that could cause real harm
                              ^
Error [ERR_REQUIRE_ESM]: require() of ES Module /app/node_modules/.pnpm/@sindresorhus+slugify@2.2.1/node_modules/@sindresorhus/slugify/index.js from /app/node_modules/.pnpm/@mastra+core@0.23.3_@sinclair+typebox@0.34.41_encoding@0.1.13_openapi-types@12.1.3_react@19.2_z2dqksn5fjdorsfe3momgu443q/node_modules/@mastra/core/dist/chunk-5KNLBUBH.cjs not supported.
Instead change the require of index.js in /app/node_modules/.pnpm/@mastra+core@0.23.3_@sinclair+typebox@0.34.41_encoding@0.1.13_openapi-types@12.1.3_react@19.2_z2dqksn5fjdorsfe3momgu443q/node_modules/@mastra/core/dist/chunk-5KNLBUBH.cjs to a dynamic import() which is available in all CommonJS modules.
    at Hook.Module.require (/app/node_modules/.pnpm/dd-trace@5.56.0/node_modules/dd-trace/packages/dd-trace/src/ritm.js:97:31)
    at Object.<anonymous> (/app/node_modules/.pnpm/@mastra+core@0.23.3_@sinclair+typebox@0.34.41_encoding@0.1.13_openapi-types@12.1.3_react@19.2_z2dqksn5fjdorsfe3momgu443q/node_modules/@mastra/core/dist/chunk-5KNLBUBH.cjs:26:15) {
  code: 'ERR_REQUIRE_ESM'

The error appears **only **when I am deploying my application on Koyeb while the local development environment (using a Devcontainer) works just fine. It seems to be related to some issues with slugify. Do you have any idea on how to solve this?

[madagra]

The problem has been solved by upgrading to NodeJS v20.19. From this version onward, loading ECMAScript modules using require() (the root cause of the error above) is not behind the flag --experimental-require-module anymore (see here: https://nodejs.org/docs/latest-v20.x/api/modules.html#loading-ecmascript-modules-using-require). In this way, we solved the issue without changing our deployment pipeline.

[LekoArts]

Thanks for the feedback! As requested, we'll close this.

For the upcoming v1 version we require Node.js >=22.13.0 so this will be solved for everyone then, too.