jest-preset-preact
v4.1.1
Published
Jest preset for testing Preact apps
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jest-preset-preact
Jest preset containing all required configuration for writing tests for preact.
Features:
- Transpiles JSX to
h()
- Aliases for
react
imports to point topreact/compat
- Automatically serialize Preact
VNodes
in snapshots - Stub style imports (
.css
,.less
,.sass/scss
, etc) - Add typeahead preview for filtering in jest's watch mode
Usage
Install it via npm or yarn:
npm install --save-dev jest-preset-preact
# or via yarn
yarn add -D jest-preset-preact
...and add the preset to your jest.config.js
file.
// jest.config.js
module.exports = {
preset: 'jest-preset-preact',
};
You can override the default Babel config by providing your own Babel config file:
// babel.config.js
module.exports = {
env: {
test: {
plugins: [
[
"@babel/plugin-transform-react-jsx",
{
runtime: "automatic",
importSource: "preact"
}
]
]
}
}
}
This, for example, would enable the runtime JSX transform instead of the classic.
License
MIT, see the LICENSE file.