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downloads](https://img.shields.io/npm/dm/react-group-state?style=flat-square)](https://www.npmjs.com/package/react-group-state)\n[![NPM license](https://img.shields.io/npm/l/react-group-state?style=flat-square)](https://www.npmjs.com/package/react-group-state)\n[![Codecov](https://img.shields.io/codecov/c/github/cool-hooks/react-group-state?style=flat-square)](https://codecov.io/gh/cool-hooks/react-group-state)\n[![Travis](https://img.shields.io/travis/com/cool-hooks/react-group-state/main?style=flat-square)](https://travis-ci.com/cool-hooks/react-group-state)\n[![Bundle size](https://img.shields.io/bundlephobia/min/react-group-state?style=flat-square)](https://bundlephobia.com/result?p=react-group-state)\n\n## About\n\nUse state management style from React class components in function components\n\n### Idea\n\n[**setState**](https://reactjs.org/docs/react-component.html#setstate) in class components in React\n\n### Demo\n\n**[Playground – play with library in CodeSandbox](https://codesandbox.io/s/react-group-state-q4iss)**\n\n### Alternatives\n\n- [react-use-state-group](https://www.npmjs.com/package/react-use-state-group/) by [chenyuwang](https://www.npmjs.com/~chenyuwang/)\n\n## How to Install\n\nFirst, install the library in your project by npm:\n\n```sh\n$ npm install react-group-state\n```\n\nOr Yarn:\n\n```sh\n$ yarn add react-group-state\n```\n\n## Getting Started\n\n• Import hook in React application file:\n\n```js\nimport { useGroupState } from 'react-group-state';\n```\n\n#### Params\n\n| Name      | Type   | Description   |\n| --------- | ------ | ------------- |\n| **state** | object | Initial state |\n\n\u003c!-- TODO add options --\u003e\n\n#### Returned Values\n\n| Name         | Type                                                  | Description                                                                                                                                                                                        |\n| ------------ | ----------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| **state**    | object                                                | State                                                                                                                                                                                              |\n| **setState** | (object or (prevState) =\u003e object, (newState) =\u003e void) | Function to set new state where **the first parameter** is new object or function with previous state that returns object and **second parameter** where value passed to function is updated state |\n\n## Example\n\n**• Use `useGroupState` Hook:**\n\n```jsx\nimport React from 'react';\nimport { useGroupState } from 'react-group-state';\n\nconst App = () =\u003e {\n  const [state, setState] = useGroupState({\n    name: 'John',\n    email: 'john@example.com',\n    age: 21,\n  });\n\n  const updateUserInfo = () =\u003e {\n    setState({\n      name: 'Paul',\n      age: 37,\n    });\n  };\n\n  return (\n    \u003c\u003e\n      \u003cp\u003e\n        {state.name} is {state.age} years old\n      \u003c/p\u003e\n\n      \u003cbutton onClick={updateUserInfo}\u003eChange user name and age\u003c/button\u003e\n    \u003c/\u003e\n  );\n};\n\nexport default App;\n```\n\n```js\nsetState(\n  ({ age }) =\u003e ({\n    name: 'Paul',\n    age: age + 16,\n  }),\n  (newState) =\u003e console.log(JSON.stringify(newState))\n);\n```\n\n## License\n\nThis project is licensed under the MIT License © 2020-present Jakub Biesiada\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcool-hooks%2Freact-group-state","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcool-hooks%2Freact-group-state","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcool-hooks%2Freact-group-state/lists"}