mastra dev/build bundling error
CLI
Hey guys, can someone help me figure this out? Mastra dev isn't able to bundle itself.
the funny thing is that I already have @mastra as an external bundle in my code. When running
INFO [2026-02-05 11:55:45.968 -0500] (Mastra CLI): Analyzing dependencies...
INFO [2026-02-05 11:55:47.297 -0500] (Mastra CLI): Optimizing dependencies...
INFO [2026-02-05 11:55:51.303 -0500] (Mastra CLI): Bundling Mastra application
INFO [2026-02-05 11:55:52.669 -0500] (Mastra CLI): Bundling Mastra done
INFO [2026-02-05 11:55:52.669 -0500] (Mastra CLI): Copying public files
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Done copying public files
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Copying .npmrc file
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Done copying .npmrc file
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Installing dependencies
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): Done installing dependencies
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): Build successful, you can now deploy the .mastra/output directory to your target platform.
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): To start the server, run: node .mastra/output/index.mjs
> @interfere/[email protected] dev ||/Users/rut/Developer/project_name/src/packages/private/ai||
> mastra dev
ERROR [2026-02-05 11:56:00.737 -0500] (Mastra CLI): Mastra wasn't able to bundle "@mastra", might be an older commonJS module. Please add `@mastra` to your externals.
export const mastra = new Mastra({
bundler: {
externals: ["@mastra"],
}
})INFO [2026-02-05 11:55:45.968 -0500] (Mastra CLI): Analyzing dependencies...
INFO [2026-02-05 11:55:47.297 -0500] (Mastra CLI): Optimizing dependencies...
INFO [2026-02-05 11:55:51.303 -0500] (Mastra CLI): Bundling Mastra application
INFO [2026-02-05 11:55:52.669 -0500] (Mastra CLI): Bundling Mastra done
INFO [2026-02-05 11:55:52.669 -0500] (Mastra CLI): Copying public files
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Done copying public files
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Copying .npmrc file
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Done copying .npmrc file
INFO [2026-02-05 11:55:52.672 -0500] (Mastra CLI): Installing dependencies
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): Done installing dependencies
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): Build successful, you can now deploy the .mastra/output directory to your target platform.
INFO [2026-02-05 11:55:56.573 -0500] (Mastra CLI): To start the server, run: node .mastra/output/index.mjs
> @interfere/[email protected] dev ||/Users/rut/Developer/project_name/src/packages/private/ai||
> mastra dev
ERROR [2026-02-05 11:56:00.737 -0500] (Mastra CLI): Mastra wasn't able to bundle "@mastra", might be an older commonJS module. Please add `@mastra` to your externals.
export const mastra = new Mastra({
bundler: {
externals: ["@mastra"],
}
})the funny thing is that I already have @mastra as an external bundle in my code. When running
mastra buildmastra build