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bs-effector
Advanced tools
ReasonML bindings for effector.
npm install --save bs-effector
Then add bs-effector to bs-dependencies in your bsconfig.json
:
{
"bs-dependencies": ["bs-effector"]
}
open Effector;
let counter = Store.make(0);
let increment: Event.t(unit) = Event.make("increment");
let decrement: Event.t(unit) = Event.make("decrement");
Store.(
counter
|> on(increment, (state, payload) => state + 1)
|> on(decrement, (state, payload) => state - 1)
);
let text = Store.make("hello world");
let d = Store.(counter |> map(v => "test"));
counter |> Store.watch(state => Js.log(state));
increment |> Event.watch(state => {
Js.log({j|event $state|j});
});
effector 20.0.0
merge
for merging eventsimport {createEvent, merge} from 'effector'
const foo = createEvent()
const bar = createEvent()
const baz = merge([foo, bar])
baz.watch(v => console.log('merged event triggered: ', v))
foo(1)
// => merged event triggered: 1
bar(2)
// => merged event triggered: 2
split
for pattern-matching over eventsimport {createEvent, split} from 'effector'
const message = createEvent()
const messageByAuthor = split(message, {
bob: ({user}) => user === 'bob',
alice: ({user}) => user === 'alice',
})
messageByAuthor.bob.watch(({text}) => {
console.log('[bob]: ', text)
})
messageByAuthor.alice.watch(({text}) => {
console.log('[alice]: ', text)
})
message({user: 'bob', text: 'Hello'})
// => [bob]: Hello
message({user: 'alice', text: 'Hi bob'})
// => [alice]: Hi bob
/* default case, triggered if no one condition met */
const {__: guest} = messageByAuthor
guest.watch(({text}) => {
console.log('[guest]: ', text)
})
message({user: 'unregistered', text: 'hi'})
// => [guest]: hi
clearNode
to automatically dispose all related intermediate stepsimport {createEvent, clearNode} from 'effector'
const source = createEvent()
const target = source.map(x => {
console.log('intermediate step')
return x
})
target.watch(x => console.log('target watcher'))
source()
// => intermediate step
// => target watcher
clearNode(target)
source() // ~ no reaction ~
Fix promise warning for effects
Add effect.finally
import {createEffect} from 'effector'
const fetchApiFx = createEffect({
handler: n =>
new Promise(resolve => {
setTimeout(resolve, n, `${n} ms`)
}),
})
fetchApiFx.finally.watch(response => {
console.log(response)
})
await fetchApiFx(10)
// => {status: 'done', result: '10 ms', params: 10}
// or
// => {status: 'fail', error: Error, params: 10}
event.filterMap
as new alias for event.filter(fn)
extract
, withProps
, is.*
re-exportsFAQs
Reason bindings for effector
We found that bs-effector demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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