The tokens are defined under the tokens/ folder and follow the tokens.studio specification.
Normally, our designers will update this folder by syncing it with Figma.
But if you are maintaining a custom fork and wish to modify the tokens, you can also edit the JSON data in this folder directly.
The tokens are then transformed using Style Dictionary into formats which supported platforms can consume.
These generated files live in the assets/ folder, and the code that generates them can be found in src/.
Generate them by running:
yarn build
If you change the code, make sure it is formatted correctly and free of lint errors. You can do this by running:
yarn run check --write
This will format your code and automatically apply any lint fixes that are considered 'safe', all at once.
There's also yarn format and yarn lint if you want to do them individually.