carbon-codemod

This is a collection of codemods that help you upgrade to a new version of carbon-react. The release notes of carbon-react will indicate which codemod you should use.

Usage

npx carbon-codemod <name-of-codemod> <target>

• add-prop
• button-destructive
• deprecate-create
• dialog-full-screen-app-wrapper
• message-remove-classic-theme
• move-experimental-components
• move-pod-description-to-content
• remove-prop
• rename-prop
• replace-collapsible-pod-with-accordion
• replace-flash-with-toast
• replace-prop-value
• replace-row-column-with-grid
• tile-update-padding-prop

Note that <target> is worked out relative to the current working directory.

Make sure that the codemod is not being run in a folder containing a package.json file, as it may fail reporting missing dependencies.

For TypeScript codebase conversion use the --typescript option:

npx carbon-codemod <name-of-codemod> <target> --typescript

List of codemods with TypeScript support:

• message-remove-classic-theme
• move-experimental-components
• rename-prop
• remove-prop
• replace-row-column-with-grid

Development

carbon-codemod is a wrapper around jscodeshift.

Running locally

• npm link
• cd my-other-project
• npm link carbon-codemod
• npx carbon-codemod <name-of-codemod> <target>

Debugging

To debug the CLI

• node --inspect-brk ./bin/carbon-codemod
• Open the command palette and select "> Debug: Attach to Node Process (preview)"
• You can add addition arguments as required e.g. node --inspect-brk ./bin/carbon-codemod --version

It's also possible to debug the tests

• Open the spec file
• Use Run Current Spec in the "Run" pane
• You can use the "Debug Console" to interact with the debugger

You can use astexplorer.net to help understand the existing structure of files. You should use the following settings:

• parser: esprima for js or @babel/parser for TypeScript
• transform: jscodeshift

Transformation Status

The return value of the function determines the status of the transformation:

Status	Condition	Successful
ok	A string is returned and it is different from passed source	✅
skipped	If nothing is returned, the file is not supposed to be transformed	✅
unmodified	If a string is returned but it's the same as the source	❌
error	If the transform throws an Exception	❌

Testing

• npm test
• It's important to test that each codemod is idempotent.
• Use defineTest to write new tests, this will create a fixture test and an idempotent test.
• A codemod should convert both javascript and TypeScript projects.

Releasing

• This project publishes using semantic-release.
• It follows conventional commits.
• When a pull request is merged to master Github Actions will run semantic-release.
• semantic-release will decide, based on the commits that have been merged, if a new release is required.
• If a new release is required, a new version will be published to npm and GitHub releases.