🙋‍♂️ fork by react-hanger

gm-react-hanger

Set of a helpful hooks, for different specific to some primitives types state changing helpers. Has two APIs:

• First and original from v1 is based on object destructuring e.g. const { value, toggle } = useBoolean(false) (Docs below)
• Second API (recommended why?) is based on more idiomatic to React hooks API, e.g. like useState with array destructuring const [value, actions] = useBoolean(false) (Docs)

Install

yarn add gm-react-hanger

Usage

import React, { Component } from 'react';

import { useInput, useBoolean, useNumber, useArray, useOnMount, useOnUnmount } from 'react-hanger';

const App = () => {
  const newTodo = useInput('');
  const showCounter = useBoolean(true);
  const limitedNumber = useNumber(3, { lowerLimit: 0, upperLimit: 5 });
  const counter = useNumber(0);
  const todos = useArray(['hi there', 'sup', 'world']);

  const rotatingNumber = useNumber(0, {
    lowerLimit: 0,
    upperLimit: 4,
    loop: true,
  });

  return (
    <div>
      <button onClick={showCounter.toggle}> toggle counter </button>
      <button onClick={() => counter.increase()}> increase </button>
      {showCounter.value && <span> {counter.value} </span>}
      <button onClick={() => counter.decrease()}> decrease </button>
      <button onClick={todos.clear}> clear todos </button>
      <input type="text" value={newTodo.value} onChange={newTodo.onChange} />
    </div>
  );
};

Example

Open in CodeSandbox

API reference (object destructuring)

How to import?

import { useBoolean } from 'react-hanger' // will import all of functions
import useBoolean from 'react-hanger/useBoolean' // will import only this function

useStateful

Just an alternative syntax to useState, because it doesn't need array destructuring.
It returns an object with value and a setValue method.

const username = useStateful('test');

username.setValue('tom');
console.log(username.value);

useBoolean

const showCounter = useBoolean(true);

Methods:

• toggle
• setTrue
• setFalse

useNumber

const counter = useNumber(0);
const limitedNumber = useNumber(3, { upperLimit: 5, lowerLimit: 3 });
const rotatingNumber = useNumber(0, {
  upperLimit: 5,
  lowerLimit: 0,
  loop: true,
});

Methods:

Both increase and decrease take an optional amount argument which is 1 by default, and will override the step property if it's used in the options.

• increase(amount = 1)
• decrease(amount = 1 )

Options:

• lowerLimit
• upperLimit
• loop
• step - sets the increase/decrease amount of the number upfront, but it can still be overriden by number.increase(3) or number.decrease(5)

useInput

const newTodo = useInput('');

<input value={newTodo.value} onChange={newTodo.onChange} />

<input {...newTodo.eventBind} />
<Slider {...newTodo.valueBind} />

Methods:

• clear
• onChange
• eventBind - binds the value and onChange props to an input that has e.target.value
• valueBind - binds the value and onChange props to an input that's using only value in onChange (like most external components)

Properties:

• hasValue

useArray

const todos = useArray([]);

Methods:

• add
• clear
• removeIndex
• removeById - if array consists of objects with some specific id that you pass all of them will be removed
• move - moves item from position to position shifting other elements.

    So if input is [1, 2, 3, 4, 5]

    from  | to    | expected
    3     | 0     | [4, 1, 2, 3, 5]
    -1    | 0     | [5, 1, 2, 3, 4]
    1     | -2    | [1, 3, 4, 2, 5]
    -3    | -4    | [1, 3, 2, 4, 5]

useMap

const { value, set } = useMap([['key', 'value']]);
const { value: anotherValue, remove } = useMap(new Map([['key', 'value']]));

Actions:

• set
• remove
• clear
• initialize - applies tuples or map instances
• setValue

useSetState

const { state, setState } = useSetState({ loading: false });
setState({ loading: true, data: [1, 2, 3] });

Methods:

• setState(value) - will merge the value with the current state (like this.setState works in React)

Properties:

• state - the current state

usePrevious

Use it to get the previous value of a prop or a state value.
It's from the official React Docs.
It might come out of the box in the future.

const Counter = () => {
  const [count, setCount] = useState(0);
  const prevCount = usePrevious(count);
  return (
    <h1>
      Now: {count}, before: {prevCount}
    </h1>
  );
};

useActions

return bound dispatch actions

const { action1, action2 } = useActions(actions);
// dispatch action
action1();

useDebounce

see lodash debounce

  const fetch = () {...};
  const debounceFetch = useDebounce(fetch);

useShallowEqualSelector

see react-redux hooks api

useRestore

/**
 * save the current application state to top.history.state
 * restore the status of the application when refreshing or rebounding
 */
  const App = () => {
    /**
     * react-router history, In general: stateContainer._history
     */
    useRestore(history);
     ...
  }

useInterval

see Making setInterval Declarative with React Hooks

useCountdown

  const { rt, start } = useCountdown(SECOND);

  const [text, setText] = useState('发送验证码');

  useEffect(() => {
    if (rt > 0) {
      setText(`${rt}秒后重试`);
    } else {
      setText('发送验证码');
    }
  }, [rt]);

  // button click -> start