├── .gitignore
├── LICENSE
├── README.md
├── index.js
└── package.json


/.gitignore:
--------------------------------------------------------------------------------
 1 | # Logs
 2 | logs
 3 | *.log
 4 | npm-debug.log*
 5 | yarn-debug.log*
 6 | yarn-error.log*
 7 | 
 8 | # Runtime data
 9 | pids
10 | *.pid
11 | *.seed
12 | *.pid.lock
13 | 
14 | # Directory for instrumented libs generated by jscoverage/JSCover
15 | lib-cov
16 | 
17 | # Coverage directory used by tools like istanbul
18 | coverage
19 | 
20 | # nyc test coverage
21 | .nyc_output
22 | 
23 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
24 | .grunt
25 | 
26 | # Bower dependency directory (https://bower.io/)
27 | bower_components
28 | 
29 | # node-waf configuration
30 | .lock-wscript
31 | 
32 | # Compiled binary addons (https://nodejs.org/api/addons.html)
33 | build/Release
34 | 
35 | # Dependency directories
36 | node_modules/
37 | jspm_packages/
38 | 
39 | # TypeScript v1 declaration files
40 | typings/
41 | 
42 | # Optional npm cache directory
43 | .npm
44 | 
45 | # Optional eslint cache
46 | .eslintcache
47 | 
48 | # Optional REPL history
49 | .node_repl_history
50 | 
51 | # Output of 'npm pack'
52 | *.tgz
53 | 
54 | # Yarn Integrity file
55 | .yarn-integrity
56 | 
57 | # dotenv environment variables file
58 | .env
59 | 
60 | # next.js build output
61 | .next
62 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2019 yck
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # react-useful-hooks
 2 | 
 3 | 如果你还不知道 Hooks 该怎么用，可以先阅读下[这篇文章](https://github.com/KieSun/Dream/issues/15)。
 4 | 
 5 | ## 用例
 6 | 
 7 | 具体用例可以在 [codesandbox](https://codesandbox.io/s/xrlwz94zkp) 阅读
 8 | 
 9 | ### useSetState
10 | 
11 | ```js
12 | const [state, setState] = useSetState({
13 |     loading: true,
14 |     count: 0
15 | });
16 | setState({
17 |     count: 2
18 | });
19 | ```
20 | 
21 | ### useOnDidUpdate
22 | 
23 | ```js
24 | // 组件更新就执行
25 | useOnDidUpdate(
26 |   () => console.log(1)
27 | );
28 | // 只执行一次
29 | useOnDidUpdate(
30 |   () => console.log(1),
31 |   []
32 | );
33 | ```
34 | 
35 | ### useOnWillUnmount
36 | 
37 | 用法于 `useOnDidUpdate` 一致
38 | 
39 | ### usePreState
40 | 
41 | ```js
42 | const preCount = usePreState(state.count);
43 | ```
44 | 


--------------------------------------------------------------------------------
/index.js:
--------------------------------------------------------------------------------
 1 | import { useEffect, useState, useCallback, useRef } from "react";
 2 | 
 3 | const useSetState = initState => {
 4 |   const [state, setState] = React.useState(initState);
 5 |   return [
 6 |     state,
 7 |     React.useCallback(v => {
 8 |       return setState(preState => ({
 9 |         ...preState,
10 |         ...(typeof v === "function" ? v(preState) : v)
11 |       }));
12 |     }, [])
13 |   ];
14 | };
15 | 
16 | const useOnDidUpdate = (cb, dep) => {
17 |   useEffect(() => {
18 |     typeof cb === "function" && cb();
19 |   }, dep);
20 | };
21 | 
22 | const useOnWillUnmount = (cb, dep) => {
23 |   useEffect(() => {
24 |     return typeof cb === "function" && cb();
25 |   }, dep);
26 | };
27 | 
28 | const usePreState = state => {
29 |   const ref = React.useRef();
30 |   useOnDidUpdate(() => {
31 |     ref.current = state;
32 |   });
33 |   return ref.current;
34 | };
35 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "react-useful-hooks",
 3 |   "version": "1.0.0",
 4 |   "description": "useful hooks for React",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "repository": {
10 |     "type": "git",
11 |     "url": "git+https://github.com/KieSun/react-useful-hooks.git"
12 |   },
13 |   "author": "yck",
14 |   "license": "MIT",
15 |   "bugs": {
16 |     "url": "https://github.com/KieSun/react-useful-hooks/issues"
17 |   },
18 |   "homepage": "https://github.com/KieSun/react-useful-hooks#readme",
19 |   "dependencies": {
20 |     "react": "^16.8.4"
21 |   }
22 | }
23 | 


--------------------------------------------------------------------------------