preconf
v1.1.0
Published
Configure your components, easily.
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A Higher Order Component that provides configuration (from context & defaults) as props.
Preconf is just 400 bytes and works well with preact-context-provider.
Usage
import preconf from 'preconf';
import Provider from 'preact-context-provider';
// generally from an import
const defaults = {
greeting: 'hello'
};
let configure = preconf(null, defaults);
/** Wire two configuration fields up to props: */
@configure('greeting, name')
class Foo extends Component {
render({ greeting, name }) {
return <span>{greeting}, {name}</span>
}
}
/** Render from defaults: */
render(<Foo />);
// <span>hello, </span>
/** Provide overrides as `context.config`: */
render(
<Provider config={{ name: 'Stan' }}>
<Foo />
</Provider>
);
// <span>hello, Stan</span>
API
Table of Contents
preconf
Creates a higher order component that provides values from configuration as props.
Parameters
namespace
String? If provided, exposesdefaults
under anamespace
defaults
Object? An object containing default configuration values
Examples
Decorate a component without any namespace or defaults
let configure = preconf();
export const MyConfiguredComponent = configure({ a: 'a' })(MyComponent);
MyConfiguredComponent.getWrappedComponent() === MyComponent; // true
Decorate a component without a namespace and using defaults
let configure = preconf(null, { url:'//foo.com' });
export default configure({ url: 'url' })( props =>
<a href={props.url} />
);
Decorate a component with weather namespace and using defaults
let configure = preconf('weather', { url:'//foo.com' });
export default configure({
url: 'weather.url'
})( ({ url }) =>
<a href={props.url} />
);
Returns Function configure()
configure
Creates a Higher Order Component (HOC) that provides configuration as props.
Parameters
keys
(Object | Array<String>) An object where the keys are prop names to pass down and values are dot-notated keypaths corresponding to values in configuration. If a string or array, prop names are inferred from configuration keys.
Returns Function configureComponent(Component) -> Component. The resulting HOC has a method getWrappedComponent()
that returns the Child that was wrapped