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patronum

☄️ Effector utility library delivering modularity and convenience

  • 0.4.0
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  • npm
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effecto patronum ✨

Commitizen friendly Conventional Commits code style: prettier

☄️ Effector utility library delivering modularity and convenience

🧁 Condition

import { createEvent } from 'effector';
import { condition } from 'patronum/condition';

const trigger = createEvent<string>();

const longString = createEvent<string>();
const shortString = createEvent<string>();

condition({
  source: trigger,
  if: (string) => string.length > 8,
  then: longString,
  else: shortString,
});

🧁 Delay

import { createEvent } from 'effector';
import { delay } from 'patronum/delay';

const trigger = createEvent<string>(); // createStore or createEffect
const delayed = delay(trigger, 300);

delayed.watch((payload) => console.info('triggered', payload));

trigger('hello');
// after 300ms
// => triggered hello

🧁 Debounce

import { createEvent } from 'effector';
import { debounce } from 'patronum/debounce';

// You should call this event
const trigger = createEvent<number>();

const target = debounce(trigger, 200);

target.watch((payload) => console.info('debounced', payload));

trigger(1);
trigger(2);
trigger(3);
trigger(4);
// after 200ms
// => debounced 4

🧁 Throttle

import { createEvent } from 'effector';
import { throttle } from 'patronum/throttle';

// You should call this event
const trigger = createEvent<number>();

const target = throttle(trigger, 200);

target.watch((payload) => console.info('throttled', payload));

trigger(1);
trigger(2);
trigger(3);
trigger(4);
// 200ms after trigger(1)
// => throttled 1

⏺ Reshape

import { createStore } from 'effector';
import { reshape } from 'patronum/reshape';

const $original = createStore<string>('Hello world');

const parts = reshape($original, {
  length: (string) => string.length,
  first: (string) => string.split(' ')[0] || '',
  second: (string) => string.split(' ')[1] || '',
});

parts.length.watch(console.info); // 11
parts.first.watch(console.log); // "Hello"
parts.second.watch(console.log); // "Second"

⏺ Spread

import { createEvent, createStore } from 'effector';
import { spread } from 'patronum/spread';

const trigger = createEvent<{ first: string; second: string }>();

const $first = createStore('');
const $second = createStore('');

spread(trigger, {
  first: $first,
  second: $second,
});

trigger({ first: 'Hello', second: 'World' });

$first.getState(); // "Hello"
$second.getState(); // "World"

⏺ SplitMap

import { createEvent } from 'effector';
import { splitMap } from 'patronum/splitmap';

const nameReceived = createEvent<string>();

const received = splitMap(nameReceived, {
  firstName: (string) => string.split(' ')[0], // string | undefined
  lastName: (string) => string.split(' ')[1], // string | undefined
});

received.firstName.watch((first) => console.info('firstname received', first));
received.lastName.watch((last) => console.info('lastname received', last));

nameReceived('Sergey');
// firstname received "Sergey"

nameReceived('Sergey Sova');
// firstname received "Sergey"
// lastname received "Sova"

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Package last updated on 23 Apr 2020

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