After run `vercel dev` in local, and a request came in, terminal will output a lot of ts error of `d.ts` files in node_modules

(edited)

there is nothing to do with my deploy, but only local-dev envirnment. 微信图片_2024-11-12_155157_446

env:

vercel 37.12.1

package.json:

{
  "name": "vercel-serverless",
  "version": "1.0.1",
  "description": "",
  "main": "index.js",
  "scripts": {
    "vercel": "vercel dev",
    "postinstall": "prisma generate"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@fastify/type-provider-typebox": "^5.0.1",
    "@types/node": "^18.0.0",
    "@vercel/node": "^2.6.1",
    "prisma": "^5.7.1",
    "ts-node": "10.9.2",
    "typescript": "4.9.5"
  },
  "dependencies": {
    "@fastify/autoload": "^5.0.0",
    "@fastify/sensible": "^5.0.0",
    "@prisma/client": "^5.22.0",
    "dotenv": "^16.0.3",
    "fastify": "^4.9.2",
    "fastify-cli": "^5.5.1",
    "fastify-plugin": "^4.0.0"
  },
  "overrides": {
    "@vercel/node": {
      "ts-node": "10.9.2",
      "typescript": "5.6.2"
    }
  }
}

Vercel Alum

Hi, ! Welcome to the Vercel Community

Based on the specific errors you're seeing with Fastify's type definitions, this is likely a TypeScript configuration issue.

You can try running the development server with the --ignore-ts-errors flag as a temporary solution:

 vercel dev --ignore-ts-errorsvercel dev --ignore-ts-errors

But it might want to check your package versions to ensure compatibility:

 npm list fastify @types/node typescriptnpm list fastify @types/node typescript

Make sure your Fastify version and TypeScript version are compatible. You might want to update to the latest stable versions:

 npm install fastify@latest typescript@latest @types/node@latestnpm install fastify@latest typescript@latest @types/node@latest

Let us know how you get on!

Thanks, pawlean. actually my dependencies were already latest.

https://github.com/XHFkindergarten/vercel-fastify-report-demo

GitHub

GitHub - XHFkindergarten/vercel-fastify-report-demo: https://vercel.community/t/after-run-vercel-dev-in-local-and-a-request-came-in-terminal-will-output-a-lot-of-ts-error-of-d-ts-files-in-node-modules/1913

https://vercel.community/t/after-run-vercel-dev-in-local-and-a-request-came-in-terminal-will-output-a-lot-of-ts-error-of-d-ts-files-in-node-modules/1913 - XHFkindergarten/vercel-fastify-report-demo

here is a minimal demo that can reproduct this.

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{ "name": "vercel-serverless", "version": "1.0.1", "description": "", "main": "index.js", "scripts": { "vercel": "vercel dev", "postinstall": "prisma generate" }, "author": "", "license": "ISC", "devDependencies": { "@fastify/type-provider-typebox": "^5.0.1", "@types/node": "^18.0.0", "@vercel/node": "^2.6.1", "prisma": "^5.7.1", "ts-node": "10.9.2", "typescript": "4.9.5" }, "dependencies": { "@fastify/autoload": "^5.0.0", "@fastify/sensible": "^5.0.0", "@prisma/client": "^5.22.0", "dotenv": "^16.0.3", "fastify": "^4.9.2", "fastify-cli": "^5.5.1", "fastify-plugin": "^4.0.0" }, "overrides": { "@vercel/node": { "ts-node": "10.9.2", "typescript": "5.6.2" } } }