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Top 10 Examples of "kefir in functional component" in JavaScript

Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'kefir' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.

// Subscribe / add side effects
{
	Kefir.sequentially(1000, [1, 2]).onValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).offValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().onValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().offValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).onEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).offEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).onAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).offAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).log('my stream');
	Kefir.sequentially(1000, [1, 2]).offLog('my stream');
	Kefir.sequentially(1000, [1, 2]).toPromise().then((x: number) => console.log('fulfilled with:', x));
	Kefir.sequentially(1000, [1, 2]).observe({});
	Kefir.sequentially(1000, [1, 2]).observe({
		value: _ => {},
		error: _ => {},
		end: () => {},
	});
	Kefir.sequentially(1000, [1, 2]).observe();
	const subscription = Kefir.sequentially(1000, [1, 2]).observe(
		_ => {},
		_ => {},
		() => {}
	);
	if (!subscription.closed) subscription.unsubscribe();
}

// Modify an observable
{
	let observable01: Stream = Kefir.sequentially(100, [1, 2, 3]).map(x => x + 1);
let observable06: Stream = Kefir.sequentially(100, [1, 2, 3]).flatMapLatest(x => Kefir.interval(40, x).take(4));
	let observable07: Stream = Kefir.sequentially(100, [1, 2, 3]).flatMapFirst(x => Kefir.interval(40, x).take(4));
	let observable08: Stream = Kefir.sequentially(100, [1, 2, 3]).flatMapConcat(x => Kefir.interval(40, x).take(4));
	let observable09: Stream = Kefir.sequentially(100, [1, 2, 3]).flatMapConcurLimit(x => Kefir.interval(40, x).take(6), 2);
	let observable10: Stream = Kefir.sequentially(100, [1, 2]).valuesToErrors().flatMapErrors(x => Kefir.interval(40, x).take(2));
}

// Combine two observables
{
	{
		let foo: Stream  = Kefir.sequentially(100, [1, 2, 3, 4, 5, 6, 7, 8]);
		let bar: Property  = Kefir.sequentially(200, [false, true, false]).delay(40).toProperty(() => true);
		let observable01: Stream = foo.filterBy(bar);
	}
	{
		let a: Property  = Kefir.sequentially(200, [2, 3]).toProperty(() => 1);
		let b: Stream  = Kefir.interval(100, 0).delay(40).take(5);
		let observable02: Property = a.sampledBy(b)
	}
	{
		let foo: Stream  = Kefir.sequentially(100, [1, 2, 3, 4]);
		let bar: Stream  = Kefir.later(250, 0);
		let observable03: Stream = foo.skipUntilBy(bar);
	}
	{
		let foo: Stream  = Kefir.sequentially(100, [1, 2, 3, 4]);
		let bar: Stream  = Kefir.later(250, 'hello');
		let observable04: Stream = foo.takeUntilBy(bar);
	}
	{
		let foo: Stream  = Kefir.sequentially(100, [1, 2, 3, 4, 5, 6, 7, 8]).delay(40);
		let bar: Stream  = Kefir.sequentially(300, [1, 2])
// Convert observables
{
	let property: Property = Kefir.sequentially(100, [1, 2, 3]).toProperty(() => 0);
	let stream: Stream = Kefir.sequentially(100, [1, 2, 3]).toProperty(() => 0).changes();
}

// Subscribe / add side effects
{
	Kefir.sequentially(1000, [1, 2]).onValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).offValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().onValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().offValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).onEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).offEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).onAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).offAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).log('my stream');
	Kefir.sequentially(1000, [1, 2]).offLog('my stream');
	Kefir.sequentially(1000, [1, 2]).toPromise().then((x: number) => console.log('fulfilled with:', x));
	Kefir.sequentially(1000, [1, 2]).observe({});
	Kefir.sequentially(1000, [1, 2]).observe({
		value: _ => {},
		error: _ => {},
		end: () => {},
	});
	Kefir.sequentially(1000, [1, 2]).observe();
	const subscription = Kefir.sequentially(1000, [1, 2]).observe(
		_ => {},
		_ => {},
		() => {}
	);
import * as R from "ramda"
import K from "kefir"

let action$ = K.sequentially(200, [R.inc, R.inc, R.inc, R.inc, R.dec, R.dec, R.dec, R.dec])

let a = 0
action$.observe(fn => {
  a = fn(a)
  console.log(a)
})

// Next: kinda works but global variables aren't what we want to end with...
}, 1000);

		return () => clearInterval(intervalId);
	});
}

// Create a property
{
	let property01: Property = Kefir.constant(1);
	let property02: Property = Kefir.constantError(1);
	//let property03: Property = Kefir.fromPromise(new Promise(fulfill => fulfill(1)));
}

// Convert observables
{
	let property: Property = Kefir.sequentially(100, [1, 2, 3]).toProperty(() => 0);
	let stream: Stream = Kefir.sequentially(100, [1, 2, 3]).toProperty(() => 0).changes();
}

// Subscribe / add side effects
{
	Kefir.sequentially(1000, [1, 2]).onValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).offValue(x => console.log('value:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().onValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).valuesToErrors().offValue(x => console.log('error:', x));
	Kefir.sequentially(1000, [1, 2]).onEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).offEnd(() => console.log('stream ended'));
	Kefir.sequentially(1000, [1, 2]).onAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).offAny(event => console.log('event:', event));
	Kefir.sequentially(1000, [1, 2]).log('my stream');
	Kefir.sequentially(1000, [1, 2]).offLog('my stream');
	Kefir.sequentially(1000, [1, 2]).toPromise().then((x: number) => console.log('fulfilled with:', x));
return function Store(seed, action$) {
    options = R.merge(makeStore.options, options)

    let self = {options} // no OOP

    self.$ = action$
      .merge(K.constant(seed))
      .scan((state, fn) => fn(state))
      .skipDuplicates()

    return self
  }
}
Kefir.sequentially(1000, [1, 2]).observe();
	const subscription = Kefir.sequentially(1000, [1, 2]).observe(
		_ => {},
		_ => {},
		() => {}
	);
	if (!subscription.closed) subscription.unsubscribe();
}

// Modify an observable
{
	let observable01: Stream = Kefir.sequentially(100, [1, 2, 3]).map(x => x + 1);
	let observable02: Stream = Kefir.sequentially(100, [1, 2, 3]).filter(x => x > 1);
	let observable03: Stream = Kefir.sequentially(100, [1, 2, 3]).take(2);
	let observable29: Stream = Kefir.sequentially(100, [1, 2, 3]).takeErrors(2);
	let observable04: Stream = Kefir.sequentially(100, [1, 2, 3]).takeWhile(x => x < 3);
	let observable05: Stream = Kefir.sequentially(100, [1, 2, 3]).last();
	let observable06: Stream = Kefir.sequentially(100, [1, 2, 3]).skip(2);
	let observable07: Stream = Kefir.sequentially(100, [1, 3, 2]).skipWhile(x => x < 3);
	let observable08: Stream = Kefir.sequentially(100, [1, 2, 2, 3, 1]).skipDuplicates();
	let observable09: Stream = Kefir.sequentially(100, [1, 2, 2.1, 3, 1]).skipDuplicates((a, b) => Math.round(a) === Math.round(b));
	let observable10: Stream = Kefir.sequentially(100, [1, 2, 2, 3]).diff((prev, next) => next - prev, 0);
	let observable11: Stream = Kefir.sequentially(100, [1, 2, 2, 3]).scan((prev, next) => next + prev, 0);
	let observable12: Stream = Kefir.sequentially(100, [[1], [], [2,3]]).flatten();
	let observable13: Stream = Kefir.sequentially(100, [1, 2, 3, 4]).flatten(x => x % 2 === 0 ? [x * 10] : []);
	let observable14: Stream = Kefir.sequentially(200, [1, 2, 3]).delay(100);
	let observable15: Stream = Kefir.sequentially(750, [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]).throttle(2500);
	let observable16: Stream = Kefir.sequentially(100, [1, 2, 3, 0, 0, 0, 4, 5, 6]).filter(x => x > 0).debounce(250);
	let observable17: Stream = Kefir.sequentially(100, [0, -1, 2, -3]).valuesToErrors(x => {
		return {convert: x < 0, error: x * 2};
	});
	let observable18: Stream = Kefir.sequentially(100, [0, -1, 2, -3]).valuesToErrors().errorsToValues((x: number) => {
end: () => {},
	});
	Kefir.sequentially(1000, [1, 2]).observe();
	const subscription = Kefir.sequentially(1000, [1, 2]).observe(
		_ => {},
		_ => {},
		() => {}
	);
	if (!subscription.closed) subscription.unsubscribe();
}

// Modify an observable
{
	let observable01: Stream = Kefir.sequentially(100, [1, 2, 3]).map(x => x + 1);
	let observable02: Stream = Kefir.sequentially(100, [1, 2, 3]).filter(x => x > 1);
	let observable03: Stream = Kefir.sequentially(100, [1, 2, 3]).take(2);
	let observable29: Stream = Kefir.sequentially(100, [1, 2, 3]).takeErrors(2);
	let observable04: Stream = Kefir.sequentially(100, [1, 2, 3]).takeWhile(x => x < 3);
	let observable05: Stream = Kefir.sequentially(100, [1, 2, 3]).last();
	let observable06: Stream = Kefir.sequentially(100, [1, 2, 3]).skip(2);
	let observable07: Stream = Kefir.sequentially(100, [1, 3, 2]).skipWhile(x => x < 3);
	let observable08: Stream = Kefir.sequentially(100, [1, 2, 2, 3, 1]).skipDuplicates();
	let observable09: Stream = Kefir.sequentially(100, [1, 2, 2.1, 3, 1]).skipDuplicates((a, b) => Math.round(a) === Math.round(b));
	let observable10: Stream = Kefir.sequentially(100, [1, 2, 2, 3]).diff((prev, next) => next - prev, 0);
	let observable11: Stream = Kefir.sequentially(100, [1, 2, 2, 3]).scan((prev, next) => next + prev, 0);
	let observable12: Stream = Kefir.sequentially(100, [[1], [], [2,3]]).flatten();
	let observable13: Stream = Kefir.sequentially(100, [1, 2, 3, 4]).flatten(x => x % 2 === 0 ? [x * 10] : []);
	let observable14: Stream = Kefir.sequentially(200, [1, 2, 3]).delay(100);
	let observable15: Stream = Kefir.sequentially(750, [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]).throttle(2500);
	let observable16: Stream = Kefir.sequentially(100, [1, 2, 3, 0, 0, 0, 4, 5, 6]).filter(x => x > 0).debounce(250);
	let observable17: Stream = Kefir.sequentially(100, [0, -1, 2, -3]).valuesToErrors(x => {
		return {convert: x < 0, error: x * 2};
type Second = 'second';
	let observable32: Stream = Kefir.sequentially(100, ['first', 'second']).filter((value): value is First => value === 'first');
}

// Combine observables
{
	{
		let a: Stream = Kefir.sequentially(100, [1, 3]);
		let b: Stream = Kefir.sequentially(100, [2, 4]).delay(40);
		let observable01: Observable = Kefir.combine([a, b], (a, b) => a + b);
	}
	{
		let a: Stream = Kefir.sequentially(100, [1, 3]);
		let b: Stream = Kefir.sequentially(100, [2, 4]).delay(40);
		let c: Stream = Kefir.sequentially(60, [5, 6, 7]);
		let observable02: Observable = Kefir.combine([a, b], [c], (a, b, c) => a + b + c);
	}
	{
		let a: Stream = Kefir.sequentially(100, [0, 1, 2, 3]);
		let b: Stream = Kefir.sequentially(160, [4, 5, 6]);
		let c: Property = Kefir.sequentially(100, [8, 9]).delay(260).toProperty(() => 7);
		let observable03: Observable = Kefir.zip([a, b, c]);
	}
	{
		let a: Stream = Kefir.sequentially(100, [0, 1, 2]);
		let b: Stream = Kefir.sequentially(100, [0, 1, 2]).delay(30);
		let c: Stream = Kefir.sequentially(100, [0, 1, 2]).delay(60);
		let abc: Observable = Kefir.merge([a, b, c]);
	}
	{
		let a: Stream = Kefir.sequentially(100, [0, 1, 2]);
		let b: Stream = Kefir.sequentially(100, [3, 4, 5]);
counterSub(v, s) {
    return R.over("counter", R.flip(R.subtract)(v), s)
  },
})

// Comparison of approaches:
let action$ = O.of(
  mods.init,
  mods.counterInc,
  mods.counterAdd(2),
  mods.counterSub(2),
).concatMap(x => O.of(x).delay(200))

let state = D.run(
  () => D.makeStore({}),
  D.withLog({key: "db"}),
  D.withControl({}),
)(action$)

state.$.subscribe()

// Next: ???

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