React components for Opentrons' applications. Visit the Opentrons Components Library to see available components.

import { PrimaryButton } from '@opentrons/components'

export default function CowButton(props) {
  return <PrimaryButton onClick={() => console.log('🐄')} />
}

Usage requirements for dependent projects:

• Node v22.11.0+ and yarn
• The following dependencies (peer dependencies of @opentrons/components)
  • react: 17.0.1,
  • react-router-dom: ^4.2.2,
  • classnames: ^2.2.5,
  • lodash: ^4.17.4

Make sure you have read the top-level Contributing Guide.

Unit tests are run with the rest of the repositories unit tests from the top level of the project.

make test-js

Unit tests live in a __tests__ directory in the same directory as the module under test. When writing unit tests for components, we've found the following tests to be the most useful:

• DOM tests

  • Make sure the component renders the correct node type
  • Make sure DOM attributes are mapped correctly
  • Make sure handlers fire correctly

• Render tests

  • Snapshot tests using jest's snapshot functionality
  • To regenerate snapshots after an intentional rendering change, run:

  make test-js updateSnapshot=true