Mastra•2w ago

V1 Beta Bug? Fresh Quickstart Fails — ./a2a/store Not Exported by @mastra/server

Message Hey! I think there’s a packaging issue in the V1 beta. A fresh quickstart using bun create mastra@beta fails immediately when running bun run dev / mastra dev: Error [PLUGIN_ERROR]: Package subpath './a2a/store' is not defined by "exports" in @mastra/server/package.json Repro steps: mkdir test && cd test bun create mastra@beta cd <project> bun install bun run dev Version mismatch from npm ls: @mastra/core@1.0.0-beta.5 @mastra/deployer@1.0.0-beta.5 @mastra/server@1.0.3 <-- expects @mastra/core "^0.8.3" Looks like the deployer is expecting a newer @mastra/server with the a2a/store export, but npm pulls an older server that depends on core 0.8.x. Anyone else seeing this? And is there a correct server version to pin for V1 beta? Thanks! 🙏

10 Replies

Mastra Triager•2w ago

📝 Created GitHub issue: https://github.com/mastra-ai/mastra/issues/10676 🔍 If you're experiencing an error, please provide a minimal reproducible example whenever possible to help us resolve it quickly. 🙏 Thank you for helping us improve Mastra!

Abhi Aiyer•7d ago

Hi @dimitrios are you using npm? We have been seeing an issue where NPM is resolving a deprecated package for @mastra/server Seems pnpm does resolve this properly, but yarn/npm are pulling in the old deprecated version from a bad publish MONTHS ago The server can be resolved to the same version as mastra/core https://www.npmjs.com/package/@mastra/server/v/1.0.0-beta.5 i have a feeling our next release will remove this issue and npm wont resolve that version in semver

Gautham•7d ago

@Abhi Aiyer I'm using bun and noticing the same issue

Abhi Aiyer•7d ago

I think they’re resolving from the same place bun/npm. We will push a fix for this somehow

Gautham•7d ago

Specifying overrides and pinning the version doesn't help as well

"dependencies": {
    "@mastra/core": "1.0.0-beta.5",
    "cheerio": "^1.0.0",
    "node-html-parser": "^6.1.13"
  },
  "
overrides": {
    "@mastra/core": "1.0.0-beta.5",
    "@mastra/server": "1.0.0-beta.5",
    "@mastra/deployer": "1.0.0-beta.5"
  },
  "devDependencies": {
    "tsx": "^4.19.2",
    "mastra": "1.0.0-beta.4"
  }

"dependencies": {
    "@mastra/core": "1.0.0-beta.5",
    "cheerio": "^1.0.0",
    "node-html-parser": "^6.1.13"
  },
  "
overrides": {
    "@mastra/core": "1.0.0-beta.5",
    "@mastra/server": "1.0.0-beta.5",
    "@mastra/deployer": "1.0.0-beta.5"
  },
  "devDependencies": {
    "tsx": "^4.19.2",
    "mastra": "1.0.0-beta.4"
  }

Abhi Aiyer•7d ago

Put @mastra/server in dependencies and ditch the overrides What node version are you on? I can't repro it on Node v22 though strange

Gautham•7d ago

Using bun 1.3.3

_roamin_•7d ago

Hey @Gautham & @dimitrios ! Sorry to hear you're running into this issue. Could you try adding the package below:

bun add @mastra/server@1.0.0-beta.5

bun add @mastra/server@1.0.0-beta.5

Then delete your node_modules folder and your bun.lock file and finally do a bun install. This should clear the error temporarily until we ship a better fix 😉

Gautham•7d ago

Yup, deleting the bun.lock and node_modules and a fresh install worked

Abhi Aiyer•7d ago

Woo hoo!

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V1 Beta Bug? Fresh Quickstart Fails — ./a2a/store Not Exported by @mastra/server

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