rx-with-event-handler

RxJS operator for lifting a component-from-stream that wraps rx-with-event-handler-props, adding an onEvent event handling operator (and an optional orElse operator). shorthand for:

compose(
  when(hasEvent(id))(onEvent, orElse),
  withEventHandlerProps(id)
)

for a usage example, see the component-from-stream module.

for more information, see the rx-with-event-handler-props, rx-when and basic-compose modules.

API

declare function withEventHandler<E>( id: string): {
  (): EventHandlerPropsOperator<E, EventProp<E>> // = withEventHandlerProps(id)

  <I, O = I & EventHandlerProp<E> & Partial<EventProp<E>>>(
    onEvent: RxOperator<I & EventHandlerProp<E> & Partial<EventProp<E>>, O>,
    orElse?: RxOperator<I & EventHandlerProp<E>, O>
  ): RxOperator<I, O>
}

type RxOperator<I,O> = ($: Observable<I>) => Observable<O>

when the returned function is called without handlers (no argument), it simply passes the given event id string through to withEventHandlerProps from rx-with-event-handler-props, i.e. the following are equivalent:

import withEventHandler from 'rx-with-event-handler'
// import withEventHandlerProps from 'rx-with-event-handler-props'

withEventHandler('click')() // = withEventHandlerProps('click')

for convenience, this module exports the hasEvent, hasEventHandler and toHandlerKey helpers from rx-with-event-handler-props.

for a partial specification of this API, run the unit tests in your browser.

TypeScript

although this library is written in TypeScript, it may also be imported into plain JavaScript code: modern code editors will still benefit from the available type definition, e.g. for helpful code completion.

License

Copyright 2018 Stéphane M. Catala

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and Limitations under the License.