Code Monkey home page Code Monkey logo

Vercel

Develop. Preview. Ship.

Documentation · Changelog · Templates · CLI


Vercel

Vercel’s Frontend Cloud provides the developer experience and infrastructure to build, scale, and secure a faster, more personalized Web.

Deploy

Get started by importing a project or using the Vercel CLI. Then, git push to deploy.

Documentation

For details on how to use Vercel, check out our documentation.

Contributing

This project uses pnpm to install dependencies and run scripts.

You can use the dev script to run local changes as if you were invoking Vercel CLI. For example, vercel deploy --cwd=/path/to/project could be run with local changes with pnpm dev deploy --cwd=/path/to/project.

When contributing to this repository, please first discuss the change you wish to make via GitHub Discussions with the owners of this repository before submitting a Pull Request.

Please read our Code of Conduct and follow it in all your interactions with the project.

Local development

This project is configured in a monorepo, where one repository contains multiple npm packages. Dependencies are installed and managed with pnpm, not npm CLI.

To get started, execute the following:

git clone https://github.com/vercel/vercel
cd vercel
corepack enable
pnpm install
pnpm build
pnpm lint
pnpm test-unit

Make sure all the tests pass before making changes.

Running Vercel CLI Changes

You can use pnpm dev from the cli package to invoke Vercel CLI with local changes:

cd ./packages/cli
pnpm dev <cli-commands...>

See CLI Local Development for more details.

Verifying your change

Once you are done with your changes (we even suggest doing it along the way), make sure all the tests still pass by running:

pnpm test-unit

from the root of the project.

If any test fails, make sure to fix it along with your changes. See Interpreting test errors for more information about how the tests are executed, especially the integration tests.

Pull Request Process

Once you are confident that your changes work properly, open a pull request on the main repository.

The pull request will be reviewed by the maintainers and the tests will be checked by our continuous integration platform.

Interpreting test errors

There are 2 kinds of tests in this repository – Unit tests and Integration tests.

Unit tests are run locally with jest and execute quickly because they are testing the smallest units of code.

Integration tests

Integration tests create deployments to your Vercel account using the test project name. After each test is deployed, the probes key is used to check if the response is the expected value. If the value doesn't match, you'll see a message explaining the difference. If the deployment failed to build, you'll see a more generic message like the following:

[Error: Fetched page https://test-8ashcdlew.vercel.app/root.js does not contain hello Root!. Instead it contains An error occurred with this application.

    NO_STATUS_CODE_FRO Response headers:
       cache-control=s-maxage=0
      connection=close
      content-type=text/plain; charset=utf-8
      date=Wed, 19 Jun 2019 18:01:37 GMT
      server=now
      strict-transport-security=max-age=63072000
      transfer-encoding=chunked
      x-now-id=iad1:hgtzj-1560967297876-44ae12559f95
      x-now-trace=iad1]

In such cases, you can visit the URL of the failed deployment and append /_logs to see the build error. In the case above, that would be https://test-8ashcdlew.vercel.app/_logs

The logs of this deployment will contain the actual error which may help you to understand what went wrong.

Running integration tests locally

While running the full integration suite locally is not recommended, it's sometimes useful to isolate a failing test by running it on your machine. To do so, you'll need to ensure you have the appropriate credentials sourced in your shell:

  1. Create an access token. Follow the insructions here https://vercel.com/docs/rest-api#creating-an-access-token. Ensure the token scope is for your personal account.
  2. Grab the team ID from the Vercel dashboard at https://vercel.com/<MY-TEAM>/~/settings.
  3. Source these into your shell rc file: echo 'export VERCEL_TOKEN=<MY-TOKEN> VERCEL_TEAM_ID=<MY-TEAM-ID>' >> ~/.zshrc

From there, you should be able to trigger an integration test. Choose one that's already isolated to check that things work:

cd packages/next

Run the test:

pnpm test test/fixtures/00-server-build/index.test.js

@vercel/nft

Some of the Builders use @vercel/nft to tree-shake files before deployment. If you suspect an error with this tree-shaking mechanism, you can create the following script in your project:

const { nodeFileTrace } = require('@vercel/nft');
nodeFileTrace(['path/to/entrypoint.js'], {
  ts: true,
  mixedModules: true,
})
  .then(o => console.log(o.fileList))
  .then(e => console.error(e));

When you run this script, you'll see all the imported files. If files are missing, the bug is in @vercel/nft and not the Builder.

Deploy a Builder with existing project

Sometimes you want to test changes to a Builder against an existing project, maybe with vercel dev or actual deployment. You can avoid publishing every Builder change to npm by uploading the Builder as a tarball.

  1. Change directory to the desired Builder cd ./packages/node
  2. Run pnpm build to compile typescript and other build steps
  3. Run npm pack to create a tarball file
  4. Run vercel *.tgz to upload the tarball file and get a URL
  5. Edit any existing vercel.json project and replace use with the URL
  6. Run vercel or vercel dev to deploy with the experimental Builder

Reference

Vercel's Projects

wait-for icon wait-for

Small utility that waits for a file to exist and optionally have some permissions set.

xopt icon xopt

ANSI C (C89) command line options parser

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.