RxJS | The Reactive Extensions for JavaScript | Reactive Programming library

 by   Reactive-Extensions JavaScript Version: v4.1.0 License: Non-SPDX

kandi X-RAY | RxJS Summary

kandi X-RAY | RxJS Summary

RxJS is a JavaScript library typically used in Programming Style, Reactive Programming applications. RxJS has no bugs, it has no vulnerabilities and it has medium support. However RxJS has a Non-SPDX License. You can install using 'npm i rx-lite-virtualtime-compat' or download it from GitHub, npm.

The Reactive Extensions for JavaScript (RxJS) is a set of libraries for composing asynchronous and event-based programs using observable sequences and fluent query operators that many of you already know by Array#extras in JavaScript. Using RxJS, developers represent asynchronous data streams with Observables, query asynchronous data streams using our many operators, and parameterize the concurrency in the asynchronous data streams using Schedulers. Simply put, RxJS = Observables + Operators + Schedulers. Whether you are authoring a web-based application in JavaScript or a server-side application in Node.js, you have to deal with asynchronous and event-based programming. Although some patterns are emerging such as the Promise pattern, handling exceptions, cancellation, and synchronization is difficult and error-prone. Using RxJS, you can represent multiple asynchronous data streams (that come from diverse sources, e.g., stock quote, tweets, computer events, web service requests, etc.), and subscribe to the event stream using the Observer object. The Observable notifies the subscribed Observer instance whenever an event occurs. Because observable sequences are data streams, you can query them using standard query operators implemented by the Observable type. Thus you can filter, project, aggregate, compose and perform time-based operations on multiple events easily by using these operators. In addition, there are a number of other reactive stream specific operators that allow powerful queries to be written. Cancellation, exceptions, and synchronization are also handled gracefully by using the methods on the Observable object. But the best news of all is that you already know how to program like this. Take for example the following JavaScript code, where we get some stock data and then manipulate and iterate the results. Now what if this data were to come as some sort of event, for example a stream, such as a WebSocket? Then we could pretty much write the same query to iterate our data, with very little change. The only difference is that we can handle the errors inline with our subscription. And when we're no longer interested in receiving the data as it comes streaming in, we call dispose on our subscription. Note the use of subscribe instead of forEach. We could also use forEach which is an alias for subscribe but we highly suggest you use subscribe.

            kandi-support Support

              RxJS has a medium active ecosystem.
              It has 19688 star(s) with 2232 fork(s). There are 576 watchers for this library.
              It had no major release in the last 12 months.
              There are 231 open issues and 643 have been closed. On average issues are closed in 48 days. There are 57 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of RxJS is v4.1.0

            kandi-Quality Quality

              RxJS has 0 bugs and 0 code smells.

            kandi-Security Security

              RxJS has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              RxJS code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              RxJS has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              RxJS releases are available to install and integrate.
              Deployable package is available in npm.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of RxJS
            Get all kandi verified functions for this library.

            RxJS Key Features

            No Key Features are available at this moment for RxJS.

            RxJS Examples and Code Snippets

            No Code Snippets are available at this moment for RxJS.

            Community Discussions


            AngularFireModule and AngularFireDatabaseModule not being found in @angular/fire
            Asked 2022-Apr-01 at 12:56

            I am trying to implement Firebase Realtime Database into a angular project and Im getting stuck at one of the very first steps. Importing AngularFireModule and AngularFireDatabaseModule. It gives me the following error:



            Answered 2021-Aug-26 at 13:20

            AngularFire 7.0.0 was launched yesterday with a new API that has a lot of bundle size reduction benefits.

            Instead of top level classes like AngularFireDatabase, you can now import smaller independent functions.

            Source https://stackoverflow.com/questions/68939014


            throwError(error) is now deprecated, but there is no new Error(HttpErrorResponse)
            Asked 2022-Mar-01 at 00:42

            Apparently throwError(error) is now deprecated. The IntelliSense of VS Code suggests throwError(() => new Error('error'). new Error(...) accepts only strings. What's the correct way to replace it without breaking my HttpErrorHandlerService ?

            http-error.interceptor.ts ...


            Answered 2021-Aug-04 at 19:08


            How to fix: "@angular/fire"' has no exported member 'AngularFireModule'.ts(2305) ionic, firebase, angular
            Asked 2022-Feb-11 at 07:31

            I'm trying to connect my app with a firebase db, but I receive 4 error messages on app.module.ts:



            Answered 2021-Sep-10 at 12:47

            You need to add "compat" like this

            Source https://stackoverflow.com/questions/69128608


            Angular TSLint - Cannot find builder "@angular-devkit/build-angular:tslint"
            Asked 2022-Jan-04 at 13:18

            When I try to run command ng lint --fix cli throws this error:



            Answered 2021-Nov-28 at 10:34

            From v13 angular doesn't use tslint anymore due to deprecation.

            Run ng add @angular-eslint/schematics to add eslint to your application.

            It will use tslint-to-eslint-config to migrate you to eslint automatically.

            It will generate a .eslintrc.json file and migrate tslint.json to it.

            Nothing else is needed to be done.

            Source https://stackoverflow.com/questions/70141707


            Angular: How to route different modules on the same path depending on service
            Asked 2021-Dec-20 at 21:23

            Imagine a service ABService with a method isAResponsible: () => boolean and two modules: AModule and BModule.

            The question is: Is it possible to switch between AModule and BModule depending on what isAResponsible returns? And how do we 'reroute' and rerender if the value of isAResponsible changes? ABService may have several dependencies to other services so it would be preferable to make use of the DI system somehow.

            Example: If the route of interest is /aorb and ABService.isAResponsible returns true, than we would like to route AModule. If ABService.isAResponsible returns false however we want BModule to manage further routing. Note that everything should happen on a shared route.

            I tried it with guards and canActivate/canLoad but didn't succeed:

            app.module.ts ...


            Answered 2021-Dec-17 at 16:50

            You can you try this instead, I have just checked locally it works, just think it in a different way and you have your solution :)

            Source https://stackoverflow.com/questions/70394939


            Error: Package path ./compat is not exported from package
            Asked 2021-Dec-02 at 15:09

            Note: I think I was able to to reproduce this (see stackblitz example). The error there is printed in the console as "INTERNAL ASSERTION FAILED: Expected a class definition". This is different to what I get locally but to me this looks like the same issue.

            Anyway, just comment out line 15 in app.component.ts and the error will disappear.

            I am trying to get started with Firebase but when I install & compile the Angular project I am getting the following error:

            Module not found: Error: Package path ./compat is not exported from package /home/sfalk/workspaces/web-mobile/node_modules/firebase (see exports field in /home/sfalk/workspaces/web-mobile/node_modules/firebase/package.json)

            The interesting thing is that I am only getting this error when I am injecting my AuthService e.g. like this:

            Crashes ...


            Answered 2021-Dec-02 at 15:09

            You need to change your import from:

            Source https://stackoverflow.com/questions/69054603


            Angular 6 to 12 Migration: Getting Multiple Warning: Css Minimizer Plugin: > Unexpected "$"
            Asked 2021-Nov-19 at 17:27

            After migrating my angular 6 project to 12. I am getting multiple warning in terminal

            if in angular.json i set optimisation: false configuration then all issue get resolved but i don't want to make this changes it should be true only.

            with optimisation: true i am getting all these warnings:-

            Earlier same code was working fine without any warning.



            Answered 2021-Sep-08 at 10:30

            I had the same problem. You should change the import of 'assets/.../variables.scss' to './assets/.../variables.scss'. In my case it was in styles.scss but it can be in every .scss file.

            Source https://stackoverflow.com/questions/69040951


            rxjs 7 update - Subject - Expected 1 arguments, but got 0
            Asked 2021-Nov-19 at 10:13

            I updated rxjs from version 6.x.x to 7.x.x, but following error appeared:

            Error in src/app/app.component.ts (12:19) Expected 1 arguments, but got 0.

            when trying to next an empty value to the Subject



            Answered 2021-Jul-30 at 12:42


            Either typecast it with void:

            Source https://stackoverflow.com/questions/68590899


            Chart JS +ng2-charts not working on Angular+2
            Asked 2021-Jun-02 at 15:23

            Hello developers i have been literally the whole day trying to implement charts on my proyect , but following the official docs there is not way i could rid off this error :



            Answered 2021-Apr-04 at 07:29

            I too got the similar problem. I am not sure about the fix.I have resolved by downgrading the charts packages to "ng2-charts": "^2.3.0" and "chart.js": "^2.9.3".

            Source https://stackoverflow.com/questions/66936633


            internal/modules/cjs/loader.js:883 throw err
            Asked 2021-May-28 at 05:55

            I've ran into an issue running npm start (I've attached the screenshot of the error bellow) on my Angular project.

            When I run the project using ng serve, everything is working fine.

            I have tried several ways to fix this issue without success.

            This is my package.json file:



            Answered 2021-May-28 at 05:55

            the solution is:

            Delete node_modules and package-lock.json, then run $ npm install again.

            You can also try updating your version of node.

            Check version with $ node -v, install with $ sudo n stable

            Source https://stackoverflow.com/questions/65653417

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


            No vulnerabilities reported

            Install RxJS

            There are a number of ways to get started with RxJS. The files are available on cdnjs and jsDelivr.


            There are lots of ways to contribute to the project, and we appreciate our contributors. If you wish to contribute, check out our style guide. You can contribute by reviewing and sending feedback on code checkins, suggesting and trying out new features as they are implemented, submit bugs and help us verify fixes as they are checked in, as well as submit code fixes or code contributions of your own. Note that all code submissions will be rigorously reviewed and tested by the Rx Team, and only those that meet an extremely high bar for both quality and design/roadmap appropriateness will be merged into the source. First-time contributors must sign a Contribution License Agreement. If your Pull Request has the label cla-required, this is an indication that you haven't yet signed such an agreement.
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