@brightspace-ui-labs/card-overlay

Note: this is a "labs" component. While functional, these tasks are prerequisites to promotion to BrightspaceUI "official" status:

• [ ] Design organization buy-in
• [ ] design.d2l entry
• [ ] Architectural sign-off
• [ ] Continuous integration
• [ ] Cross-browser testing
• [ ] Unit tests (if applicable)
• [ ] Accessibility tests
• [ ] Visual diff tests
• [ ] Localization with Serge (if applicable)
• [ ] Demo page
• [ ] README documentation

A placeholder when an actual card component is loading

Installation

Install from NPM:

npm install @brightspace-ui-labs/card-overlay

Usage

<script type="module">
    import '@brightspace-ui-labs/card-overlay/card-overlay.js';
</script>
<d2l-labs-card-overlay>My element</d2l-labs-card-overlay>

Properties:

| Property | Type | Description | |--|--|--| | | | |

Accessibility:

To make your usage of d2l-labs-card-overlay accessible, use the following properties when applicable:

| Attribute | Description | |--|--| | | |

Developing, Testing and Contributing

After cloning the repo, run npm install to install dependencies.

Linting

# eslint and lit-analyzer
npm run lint

# eslint only
npm run lint:eslint

Testing

# lint & run headless unit tests
npm test

# unit tests only
npm run test:headless

# debug or run a subset of local unit tests
npm run test:headless:watch

Visual Diff Testing

This repo uses the @brightspace-ui/visual-diff utility to compare current snapshots against a set of golden snapshots stored in source control.

The golden snapshots in source control must be updated by the visual-diff GitHub Action. If a pull request results in visual differences, a draft pull request with the new goldens will automatically be opened against its branch.

To run the tests locally to help troubleshoot or develop new tests, first install these dependencies:

npm install @brightspace-ui/visual-diff@X mocha@Y puppeteer@Z  --no-save

Replace X, Y and Z with the current versions the action is using.

Then run the tests:

# run visual-diff tests
npx mocha './test/**/*.visual-diff.js' -t 10000
# subset of visual-diff tests:
npx mocha './test/**/*.visual-diff.js' -t 10000 -g some-pattern
# update visual-diff goldens
npx mocha './test/**/*.visual-diff.js' -t 10000 --golden

Running the demos

To start a @web/dev-server that hosts the demo page and tests:

npm start

Versioning and Releasing

This repo is configured to use semantic-release. Commits prefixed with fix: and feat: will trigger patch and minor releases when merged to main.

To learn how to create major releases and release from maintenance branches, refer to the semantic-release GitHub Action documentation.