mobx | Simple , scalable state management | State Container library

 by   mobxjs TypeScript Version: 6.12.0 License: MIT

kandi X-RAY | mobx Summary

kandi X-RAY | mobx Summary

mobx is a TypeScript library typically used in User Interface, State Container, React applications. mobx has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

MobX is a battle tested library that makes state management simple and scalable by transparently applying functional reactive programming (TFRP). The philosophy behind MobX is simple:.

            kandi-support Support

              mobx has a medium active ecosystem.
              It has 26516 star(s) with 1760 fork(s). There are 358 watchers for this library.
              There were 2 major release(s) in the last 6 months.
              There are 28 open issues and 1847 have been closed. On average issues are closed in 89 days. There are 14 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of mobx is 6.12.0

            kandi-Quality Quality

              mobx has no bugs reported.

            kandi-Security Security

              mobx has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              mobx is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              mobx releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

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            mobx Key Features

            No Key Features are available at this moment for mobx.

            mobx Examples and Code Snippets

            Mobx installation in ReactNative fails
            Lines of Code : 13dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            npm install mobx mobx-react --save //to install mobx
            npm install @babel/plugin-proposal-decorators @babel/plugin-proposal-class-properties @babel/plugin-transform-flow-strip-types --save
            React/Mobx: Integration Tests with Stores Injected into Child Components
            Lines of Code : 37dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            jest.mock('mobx-react', () => {
              // get the original reference to mobx-react
              const originalMobx = require.requireActual('mobx-react');
              // create your fake stores, they should have the same interface as the real store
              const mockS
            MobX React: How to only Re-render part of View
            Lines of Code : 34dot img3License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            const markersStore = observable({
                markers: []
            //import markersStore or inject via mobx-react package
            class MyComponent extends Component {
               render() {
                  const CMap = withGoogleMap((props) => (

            Community Discussions


            How to get the DOM element of an `observer` wrapped component?
            Asked 2022-Apr-11 at 19:13

            I have defined my JSX components like this:



            Answered 2022-Apr-11 at 19:13

            I'm sorry, I don't really understand what you're trying to get at. Perhaps this will help?



            Unable to display generated HTML ,from Showdown plugin, in React component
            Asked 2022-Apr-08 at 23:47

            I'm using Showdown module to obtain HTML from markdown. I want to display the generated HTML in my React component. My converter is working fine generating the HTML:

            Type your markdown bounty here…

            But I get this error message: Uncaught Error: Target container is not a DOM element. Is there another/better way to display the generated HTML? Can anyone point what I'm doing wrong?



            Answered 2022-Apr-08 at 23:47

            That error is thrown because you are trying to get a reference to a DOM node while it has still to be rendered on DOM itself. You could solve it by calling ReactDOM.render inside a useEffect with an empty deps array [], this way it would be executed after the first render, but you will notice that it would anyway not work as expected, since it will render a string representing HTML code, it won't parse it! ReactDOM.render is used to attach JSX code to a DOM node, while you are trying to pass an HTML string ( that' s what converter.makeHtml() returns ). So it would never work.

            A working approach would be:

            • Convert Markdown to HTML
            • Transpile HTML/JSX to React first level API
            • Parse the transpiled code
            • Execute it as real JSX code

            This is an example :



            Observer not working with useLocalObservable
            Asked 2022-Mar-24 at 10:21
            import { Observer, useLocalObservable } from 'mobx-react-lite';
            function App() {
              const { count, decrement, increment } = useLocalObservable(() => ({
                count: 0,
                increment() { this.count++ },
                decrement() { this.count-- },
              return (
                  {() => ({count})}
                   { decrement() }} >decrement
                   { increment() }} >increment


            Answered 2022-Mar-24 at 10:21

            The Observer tracks all the observable data that is dereferenced inside of it and re-renders when that observable data changes. When you dereference count from your observable outside of the Observer it is just a regular JavaScript number from that point onwards, so there is nothing for Observer to track.

            You could instead dereference it inside the Observer and it will work:



            Use mobx and react get an error: Too many re-renders. React limits the number of renders to prevent an infinite loop
            Asked 2022-Mar-10 at 08:32

            In my mind, I want use mobx to save a state named mask, when I use axios, this state will be true and when i finshed call, this state will be false, below is my code




            Answered 2022-Mar-10 at 08:32

            You are calling setVisible directly in your Mask component, which causes a re-render, which causes setVisible to be called again, and the infinite loop continues.

            You could make it so that you only update the state when store.isLoading actually changes with the help of useEffect:



            Runtime error appeared after updating to webpack 5. TypeError: Cannot read properties of undefined (reading 'default')
            Asked 2022-Mar-07 at 17:37

            After upgrading my webpack from v4 to v5, I got this error that is getting me a hard time debugging.



            Answered 2021-Nov-30 at 00:05

            For my version of this error, the issue seemed to be that I was importing a file with an alias in webpack from within the same directory.

            To give an example, I had this directory setup:



            How to solve conflict between react-router-dom v6 and mobx?
            Asked 2022-Mar-03 at 19:25

            I've created dynamic routing on my site, which changes when a user login successfully. The fact of logging I keep in global state, which observers by mobx. When the user login successfully, routes changes too, and it works correctly, but in the console, there is the next problem: Error

            Error in text variant:

            react-dom.development.js:67 Warning: React has detected a change in the order of Hooks called by AppRouter. This will lead to bugs and errors if not fixed. For more information, read the Rules of Hooks:

            Previous render Next render
            1. useState useState
            2. useState useState
            3. useRef useRef
            4. useDebugValue useDebugValue
            5. useEffect useEffect
            6. useContext useContext
            7. undefined useContext ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

            There is a screenshot of the route's component: Routes component Routes component code:



            Answered 2022-Mar-03 at 19:14

            The only overt issue I see with your code is that you are directly invoking your React components instead of rendering them as JSX for React to handle and manage the component lifecycle of.




            Flutter mobx mobx_codegen generates null safety code for computed getters
            Asked 2022-Feb-17 at 12:34

            Using mobx and mobx_codegen for Flutter.

            My code is NOT null safe (sdk: ">=2.7.0 <3.0.0").

            When mobx_codegen generates code for @computed getters, it uses null safety, which won't compile...

            Sample class counter (look at @computed):



            Answered 2022-Feb-06 at 20:35

            How´s it going?

            I am with the same issue in my project. I installed the new flutter version and after that my project stopped to compile. I changed my dependences of mobx, flutter_mobx, mobx_codegen and build_runner and them worked.

            My first dependences:



            Cannot read properties of undefined - javascript class
            Asked 2022-Feb-13 at 18:45

            I wanted to try mobx for react state management, however, I can't get this to work. I have this simple store for storing just a number called counter. You can increment/decrement it, and increse it by x. I have this file store.js for storing the state:



            Answered 2022-Feb-13 at 18:45

            Your function is losing context (this), you need to read about it to understand how it works. You destructured this function from the store and it is not bound to it anymore.

            The most common way is to define all actions as arrow functions, like that:



            How use Mobx 6 storage with React 17?
            Asked 2022-Feb-04 at 22:37

            I'm completely confused with the rules of mobX - react . Some methods in another project work, but not in this test.

            Below is the code of my components from the test application




            Answered 2022-Feb-04 at 22:37

            You need to wrap every component that uses any observable values with observer decorator, like you did with an App. But in case of App it's actually useless because you are not using observable values there. So just wrap other components and it should work fine.

            As for this line textFromFirstStore = testStoreFirst.textForSecondTestStore it won't work like you expected because you just assigned value of testStoreFirst.textForSecondTestStore to textFromFirstStore and that's it.

            To make such value reactive you need to use computed value. To make computed you just need to setup a getter function, like that:



            NPM: Link peer dependency to package alias
            Asked 2022-Feb-02 at 10:39

            Assume I have legacy codebase working with some old packages:



            Answered 2022-Feb-02 at 10:39

            You can easily do that


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install mobx

            You can download it from GitHub.


            MobX cheat sheet (also sponsors the project)10 minute interactive introduction to MobX and course, based on MobX 3
            Find more information at:

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          • npm

            npm i mobx

          • CLONE
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          • CLI

            gh repo clone mobxjs/mobx

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