contributing.md

Contributing to Next.js

Our Commitment to Open Source can be found here

1. Fork this repository to your own GitHub account and then clone it to your local device.
2. Install yarn: npm install -g yarn
3. Install the dependencies: yarn
4. Run yarn dev to build and watch for code changes
5. In a new terminal, run yarn types to compile declaration files from TypeScript
6. The development branch is canary. On a release, the relevant parts of the changes in the canary branch are rebased into master.

You may need to run yarn types again if your types get outdated.

To run tests

Running all tests:

yarn testonly

Running a specific test suite inside of the test/integration directory:

yarn testonly --testPathPattern "production"

Running just one test in the production test suite:

yarn testonly --testPathPattern "production" -t "should allow etag header support"

Running the integration apps

The correct path to the compiled next binary can be discovered by running:

find . -name next -perm -u=x -type f

Running examples can be done with:

./packages/next/dist/bin/next ./test/integration/basic
# OR
./packages/next/dist/bin/next ./examples/basic-css/

To figure out which pages are available for the given example, you can run:

EXAMPLE=./test/integration/basic
(\
  cd $EXAMPLE/pages; \
  find . -type f \
  | grep -v '\.next' \
  | sed 's#^\.##' \
  | sed 's#index\.js##' \
  | sed 's#\.js$##' \
  | xargs -I{} echo localhost:3000{} \
)

Running your own app with locally compiled version of Next.js

1. In your app's package.json, replace:

   "next": "<next-version>",

   with:

   "next": "file:<local-path-to-cloned-nextjs-repo>/packages/next",

2. In your app's root directory, make sure to remove next from node_modules with:

   rm -rf ./node_modules/next

3. In your app's root directory, run:

   yarn

   to re-install all of the dependencies.

   Note that Next will be copied from the locally compiled version as opposed to from being downloaded from the NPM registry.

4. Run your application as you normally would.

5. To update your app's dependencies, after you've made changes to your local next repository. In your app's root directory, run:

   yarn install --force