Skip to content
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
Cannot retrieve contributors at this time


Adding a new example

1. Fork repository

Being in the Examples repository, click on the "Fork" button next to the stargazers count. Once forked, the examples repository will be available for cloning from your remote:

$ git clone <YOUR_FORK_URL>

For example: git clone

2. Create example branch

$ cd examples
$ git checkout -b example-name

3. Create example directory

$ mkdir examples/<EXAMPLE_NAME>

Give a short name of the example you are about to add. If it's a usage example with a major framework, use the <API_TYPE>-<FRAMEWORK_NAME> format (i.e. rest-vue, or graphql-angular). If it's a targeted usage example with a library, use the with-<LIBRARY_NAME> format (i.e. with-playroom).

4. Initialize & implement example

Initialize a new NPM package in the newly created example directory.

$ cd examples/<EXAMPLE_NAME>
$ npm init # or yarn init

Install any necessary dependencies to showcase your example.

Keep in mind that the point of your example is to be concise. Do not add irrelevant configurations, create confusing folder structures, or generally include code that is not absolutely necessary for that example.

If you are adding an in-browser example, open the package.json and add the following script commands:

  "scripts": {
    "update": "npx msw init public",
  • update command copies the latest worker script into your example. Align the public argument value, in case it differs from the ./public directory.

You don't need to have the update script when adding a NodeJS-only usage example.

5. Add tests

Every present example must have tests. Tests serve both illustrative and verificative purpose, running against each msw release to ensure it doesn't break any usage scenarios.

The package.json of your example project must have the following script commands:

  "scripts": {
    "test": "..."

Add the relevant tests depending on your usage example. Remember to keep the overall setup fairly simple and straightforward to navigate through.

  • Please use Jest for unit/integration tests, if necessary.
  • Please use Cypress for E2E tests, if necessary.

Verify your tests are passing by running:

$ yarn test

Refer to existing examples to see how testing is implemented.

6. Write a README

$ touch

See existing README for the reference.

In the created give a short description about the example, and include the following sections:

  1. Technologies. List vital technologies used in the example.
  2. Getting started. Copy and fill in this template:
$ git clone
$ cd examples
$ yarn

Replace <EXAMPLE_NAME> with the directory name of your example defined earlier.

  1. Tests. List how to run all the levels of testing you've introduced.
  2. Key points. Reference the files necessary to achieve current integration. See existing examples for reference.

7. Submit example

Once your example is ready and the tests are written and passing, push the changes into your remote and create a Pull request on GitHub. Our team will be happy to provide you with the feedback to ensure your example is just awesome.

Thank you!