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143 lines
4.3 KiB
Markdown
143 lines
4.3 KiB
Markdown
# Contributing to Jupyter Notebook
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Thanks for contributing to Jupyter Notebook!
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Make sure to follow [Project Jupyter's Code of Conduct](https://github.com/jupyter/governance/blob/master/conduct/code_of_conduct.md)
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for a friendly and welcoming collaborative environment.
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## Setting up a development environment
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Note: You will need NodeJS to build the extension package.
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The `jlpm` command is JupyterLab's pinned version of [yarn](https://yarnpkg.com/) that is installed with JupyterLab. You may use
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`yarn` or `npm` in lieu of `jlpm` below.
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**Note**: we recomment using `mamba` to speed the creating of the environment.
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```bash
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# create a new environment
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mamba create -n notebook -c conda-forge python nodejs -y
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# activate the environment
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mamba activate notebook
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# Install package in development mode
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pip install -e ".[dev,test]"
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# Link the notebook extension and @jupyter-notebook schemas
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jlpm develop
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# Enable the server extension
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jupyter server extension enable notebook
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```
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`notebook` follows a monorepo structure. To build all the packages at once:
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```bash
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jlpm build
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```
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There is also a `watch` script to watch for changes and rebuild the app automatically:
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```bash
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jlpm watch
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```
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To make sure the `notebook` server extension is installed:
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```bash
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$ jupyter server extension list
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Config dir: /home/username/.jupyter
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Config dir: /home/username/miniforge3/envs/notebook/etc/jupyter
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jupyterlab enabled
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- Validating jupyterlab...
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jupyterlab 3.0.0 OK
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notebook enabled
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- Validating notebook...
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notebook 7.0.0a0 OK
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Config dir: /usr/local/etc/jupyter
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```
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Then start Jupyter Notebook with:
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```bash
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jupyter notebook
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```
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## Running Tests
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To run the tests:
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```bash
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jlpm run build:test
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jlpm run test
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```
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There are also end to end tests to cover higher level user interactions, located in the `ui-tests` folder. To run these tests:
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```bash
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cd ui-tests
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# start a new Jupyter server in a terminal
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jlpm start
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# in a new terminal, run the tests
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jlpm test
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```
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The `test` script calls the Playwright test runner. You can pass additional arguments to `playwright` by appending parameters to the command. For example to run the test in headed mode, `jlpm test --headed`.
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Checkout the [Playwright Command Line Reference](https://playwright.dev/docs/test-cli/) for more information about the available command line options.
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Running the end to end tests in headful mode will trigger something like the following:
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## Code Styling
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All non-python source code is formatted using [prettier](https://prettier.io) and python source code is formatted using [black](https://github.com/psf/black)s
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When code is modified and committed, all staged files will be
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automatically formatted using pre-commit git hooks (with help from
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[pre-commit](https://github.com/pre-commit/pre-commit). The benefit of
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using a code formatters like `prettier` and `black` is that it removes the topic of
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code style from the conversation when reviewing pull requests, thereby
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speeding up the review process.
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As long as your code is valid,
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the pre-commit hook should take care of how it should look.
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`pre-commit` and its associated hooks will automatically be installed when
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you run `pip install -e ".[dev,test]"`
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To install `pre-commit` manually, run the following:
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```shell
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pip install pre-commit
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pre-commit install
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```
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You can invoke the pre-commit hook by hand at any time with:
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```shell
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pre-commit run
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```
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which should run any autoformatting on your code
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and tell you about any errors it couldn't fix automatically.
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You may also install [black integration](https://github.com/psf/black#editor-integration)
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into your text editor to format code automatically.
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If you have already committed files before setting up the pre-commit
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hook with `pre-commit install`, you can fix everything up using
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`pre-commit run --all-files`. You need to make the fixing commit
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yourself after that.
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You may also use the prettier npm script (e.g. `npm run prettier` or
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`yarn prettier` or `jlpm prettier`) to format the entire code base.
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We recommend installing a prettier extension for your code editor and
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configuring it to format your code with a keyboard shortcut or
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automatically on save.
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Some of the hooks only run on CI by default, but you can invoke them by
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running with the `--hook-stage manual` argument.
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