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effector patronum ✨

inFlight

import { inFlight } from 'patronum';
// or
import { inFlight } from 'patronum/in-flight';

inFlight(effects)

Motivation

Method allows to calculate total current in flight states of each passed effect. It is useful when you want to show pending state of complex process.

Formulae

$count = inFlight([fx1, fx2]);
  • Count all pending runs of effects in one store

Arguments

  1. effects (Array<Effect<any, any, any>>) - array of any effects

Returns

  • $count (Store<number>) - Store with count of run effects in pending state

Example

import { createEffect } from 'effector';
import { inFlight } from 'patronum/in-flight';


const loadFirst = createEffect().use(() => Promise.resolve(null));
const loadSecond = createEffect().use(() => Promise.resolve(2));
const $count = inFlight([loadFirst, loadSecond]);


$count.watch((count) => console.info(`count: ${count}`));
// => count: 0


loadFirst();
loadSecond();
// => count: 2


loadSecond();
loadSecond();
// => count: 4


// Wait to resolve all effects
// => count: 0

inFlight({ domain })

Motivation

This overload allows to count effects in flight of the whole domain. It is useful when you want to show loading state of the whole application.

Formulae

$count = inFlight({ domain });
  • Count all pending runs of effects in passed domain in one store

Arguments

  1. domain (Domain) - domain to count effects from

Returns

  • $count (Store<number>) - Store with count of run effects in pending state

Example

import { createDomain } from 'effector';
import { inFlight } from 'patronum/in-flight';


const app = createDomain();
const loadFirst = app.createEffect().use(() => Promise.resolve(null));
const loadSecond = app.createEffect().use(() => Promise.resolve(2));
const $count = inFlight({ domain: app });


$count.watch((count) => console.info(`count: ${count}`));
// => count: 0


loadFirst();
loadSecond();
// => count: 2


loadSecond();
loadSecond();
// => count: 4


// Wait to resolve all effects
// => count: 0

inFlight({ effects: [] })

Motivation

This overload receives effects as an object. May be useful for additional clarity, but it’s longer to write

Formulae

$count = inFlight({ effects: [fx1, fx2] });
  • Count all pending runs of effects in one store

Arguments

  1. effects (Array<Effect<any, any, any>>) - array of any effects

Returns

  • $count (Store<number>) - Store with count of run effects in pending state

Example

import { createEffect } from 'effector';
import { inFlight } from 'patronum/in-flight';


const loadFirst = createEffect().use(() => Promise.resolve(null));
const loadSecond = createEffect().use(() => Promise.resolve(2));
const $count = inFlight({ effects: [loadFirst, loadSecond] });


$count.watch((count) => console.info(`count: ${count}`));
// => count: 0


loadFirst();
loadSecond();
// => count: 2


loadSecond();
loadSecond();
// => count: 4


// Wait to resolve all effects
// => count: 0