EventEmitter | Evented JavaScript for the browser | Pub Sub library

 by   Olical JavaScript Version: v4.2.11 License: Unlicense

kandi X-RAY | EventEmitter Summary

kandi X-RAY | EventEmitter Summary

EventEmitter is a JavaScript library typically used in Messaging, Pub Sub, Nodejs applications. EventEmitter has no vulnerabilities, it has a Permissive License and it has medium support. However EventEmitter has 1 bugs. You can install using 'npm i wolfy87-eventemitter' or download it from GitHub, npm.

Evented JavaScript for the browser
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            kandi-support Support

              EventEmitter has a medium active ecosystem.
              It has 3132 star(s) with 402 fork(s). There are 55 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 90 have been closed. On average issues are closed in 13 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of EventEmitter is v4.2.11

            kandi-Quality Quality

              EventEmitter has 1 bugs (0 blocker, 0 critical, 1 major, 0 minor) and 0 code smells.

            kandi-Security Security

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

            kandi-License License

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

            kandi-Reuse Reuse

              EventEmitter releases are available to install and integrate.
              Deployable package is available in npm.
              Installation instructions are not available. Examples and code snippets are available.
              EventEmitter saves you 5 person hours of effort in developing the same functionality from scratch.
              It has 15 lines of code, 0 functions and 4 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of EventEmitter
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            EventEmitter Key Features

            No Key Features are available at this moment for EventEmitter.

            EventEmitter Examples and Code Snippets

            add eventEmitter
            javascriptdot img1Lines of Code : 1dot img1License : Permissive (MIT License)
            copy iconCopy
            function f(a,b){return this.eventEmitter.addEventHandler(a,b),this}  

            Community Discussions

            QUESTION

            disable in Angular Material custom field component not working
            Asked 2021-Jun-15 at 15:14

            I have a custom slide toggle component created using Angular Material. I followed this guide: https://material.angular.io/guide/creating-a-custom-form-field-control

            Everything seems to be working fine except when I dynamically disable the custom component like this:

            ...

            ANSWER

            Answered 2021-Jun-11 at 19:49

            You need to add a formGroup binding to your custom component,

            Source https://stackoverflow.com/questions/67942009

            QUESTION

            React Native Expo: Network error on android
            Asked 2021-Jun-15 at 09:51

            I'm using axios in my app. When I make a post request for the very first time after opening the app, it is failing with the following error. From second time onwards, it works without any issue.

            ...

            ANSWER

            Answered 2021-Jan-18 at 05:56
            Solution 1

            Make Sure "http://" is in your URL Address .

            1. change from localhost to your ip
            2. add http://

            http://192.168.43.49:3000/user/

            Solution 2

            I faced same issue, it happens in Android, but works well in IOS. I guess this issue about Flipper Network.

            For while, I commented

            initializeFlipper(this, getReactNativeHost().getReactInstanceManager())

            in this file /android/app/src/main/java/com/{your_project}/MainApplication.java

            Solution 3

            Whoever is still struggling with this issue. it's happening because of Flipper network plugin. I disabled it and things work just fine.

            My workaround to make this work is commenting out line number 43

            Source https://stackoverflow.com/questions/65697750

            QUESTION

            Memory leak when emitting an event after menu click in Electron app
            Asked 2021-Jun-15 at 06:52

            I'm currently building a desktop application with Electron and React.

            Right now I'm adding a menu feature which toggles the dark mode of the app. In my React app, I'm using a hook which toggles the dark mode. I want to trigger that React hook right after the user has clicked on the menu item.

            This is what I've done so far:

            menu.ts:

            ...

            ANSWER

            Answered 2021-Jun-13 at 08:37

            Try setting up the toggle-dark-mode event handler once when you start your Electron app.

            Your code doesn't need to be in the ready event even.

            Source https://stackoverflow.com/questions/67956184

            QUESTION

            event emitter emit in sequence or in parallel, and behaviour when they are async
            Asked 2021-Jun-13 at 19:58

            Consider the following code:

            ...

            ANSWER

            Answered 2021-Jun-13 at 18:47

            Internally, the EvenEmitter hold an array of listeners for each event type. When you emit an event type, the EvenEmitter just goes through it's array of listeners and execute it. Therefore, the listeners are executed in the order it was added by addListener or on method.

            To answer your questions there are two parts: a) it executes in the order you added the listener and b) it depends if the listeners are async or not. If your listeners are synchronous, then you can expect that behavior. If your listeners are async, you can't expect that. Even if your execute your async synchronously, they will not necessarily resolve at the same time because it's the nature of being async.

            Source https://stackoverflow.com/questions/67961514

            QUESTION

            I want to insert with mikro-orm, but it dont find my table :c (TableNotFoundException)
            Asked 2021-Jun-12 at 17:22

            So

            Console:

            ...

            ANSWER

            Answered 2021-Apr-22 at 20:32

            I have had the same issue. This is what I did:

            1. I deleted the migrations folder as well as the dist folder
            2. I ran npx mikro-orm migration:create --initial

            After that, I restarted yarn watch and yarn dev and it worked for me.

            Notice the --initial flag. I would recommend to check the official documentation. The migrations table is used to keep track of already executed migrations. When you only run npx mikro-orm migration:create, the table will not be created and therefore MikroORM is unable to check if the migration for the Post entity has already been performed (which includes creating the respective table on the database).

            Ben does not use the --initial flag in his tutorial, he might have already ran it prior to the tutorial.

            Source https://stackoverflow.com/questions/66959888

            QUESTION

            Angular install doesn't recognize node
            Asked 2021-Jun-12 at 16:10

            I have been trying to install Angular but everytime this part:

            @angular/cli@12.0.3 postinstall C:\Users\Marco\AppData\Roaming\npm\node_modules@angular\cli

            node ./bin/postinstall/script.js

            Seems to throw an error. I'm not sure if I need this to work or not so I'll leave the last couple lines of the log here.

            ...

            ANSWER

            Answered 2021-Jun-12 at 16:10

            I fixed it by going to the actual file location of script.js and running the node command with that path. Like this:

            node AppData/Roaming/npm/node_modules/@angular/cli/bin/postinstall/script.js

            Actually that only helped a little bit. The problem was I was trying to install Angular using ConEmu GitBash and I should've been using cmd.

            Source https://stackoverflow.com/questions/67913160

            QUESTION

            Cloud function error one time in two calls : 'Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client'
            Asked 2021-Jun-10 at 15:53

            I have a cloud function that is calling a complex task (with many differents asynchronous tasks). At the end of those tasks, an event 'finished' is sent and catched by the cloud function that will terminate such as :

            ...

            ANSWER

            Answered 2021-Jun-10 at 15:53

            The answer you linked talks about the Cloud Functions lifecycle.

            When you make a request to your function, the Cloud Functions gateway checks if any "Cloud Function Executors" are idle/stale/inactive. If none are idle, a new executor is cold-started and is sent the request. If one is idle, that executor is sent the request instead to save having to cold-start a new executor. When handling a request, you tell the gateway "I'm finished" by sending back a result (for a HTTPS Event Cloud Function, this is done by using res.end() or one of its variants; for most other Cloud Functions, this is done by resolving the returned Promise chain).

            Once you've sent a result back, that "Cloud Function Executor" is marked as idle. When idle, any network requests are blocked and that executor may be shut down (terminated) at any time. As described above, an idle function may be marked active again if it handles another request which can lead to bizarre side effects if you haven't handled the lifecycle flow properly.

            So to handle the flow properly, you need to follow these steps:

            1. Validate the request (check for retries, syntax errors, missing authentication) and cancel it as necessary.
            2. Do all of the work that you need to do.
            3. Send back the appropriate result.

            If the work that you need to do is expected to take a while, write a description of the job to your database (Firestore/RTDB) so it can be handled by a different Cloud Function triggered by the write to the database, and then send back the result as a description of where to look for updates on that job.

            Looking at your code, eventEmitter seems to be defined as a global object that spits out "finished" events when it has finished doing the work in doSomethingComplex(). When myFunction is triggered the first time, all is well. But if myFunction gets reused, a second "finished" event will get fired. This works fine for the current request, but the request from earlier is still subscribed to eventEmitter and tries to send a second response resulting in the error you are seeing.

            You have three options:

            • Subscribe to only one "finished" event. (Solution Rating: Bad) (Think about if it fails and but a later request succeeds)
            • Return a private version of eventEmitter from doSomethingComplex(). (Solution Rating: Okay)
            • Convert doSomethingComplex() into a Promise-returning function. (Solution Rating: Best)

            Source https://stackoverflow.com/questions/67921964

            QUESTION

            Angular factory.factory is not a function
            Asked 2021-Jun-08 at 17:59

            I am working on a recipe app with angular, and trying to set up communication with backend services using HTTP. I have been following along with angular documentation to set this up, here is the link https://angular.io/guide/http#sending-data-to-a-server. When I add in the code to make a POST request, I get the following error:

            ...

            ANSWER

            Answered 2021-Jun-08 at 17:59

            Based on the comments and the code, you've got a bit of a mess.

            First off, your service should not have an @NgModule declaration: it's a service, not a module. Further, since your service isn't providedIn: "root", you need to actually provide it in your module.

            Assuming AppModule is where this component and this service both live, you should have an app.module.ts something like this:

            Source https://stackoverflow.com/questions/67879820

            QUESTION

            Cypress: Typescript custom commands not working
            Asked 2021-Jun-08 at 13:15

            Update: https://github.com/cypress-io/cypress/issues/1065#issuecomment-351769720 Removing an import from my commands.ts fixed it. Thanks

            I'm trying to convert my cypress project to use TypeScript. I'm following the info on https://docs.cypress.io/guides/tooling/typescript-support#Types-for-custom-commands

            I've fixed all the other compilation errors I was getting but I'm still unable to get any of my custom commands to work for example:

            commands.ts:

            ...

            ANSWER

            Answered 2021-Jun-08 at 13:08

            You have to add your custom commands like this. You can check out the discussion here - https://github.com/cypress-io/cypress/issues/1065#issuecomment-351769720 -

            Source https://stackoverflow.com/questions/67887280

            QUESTION

            Prime ng table not updating on first change
            Asked 2021-Jun-08 at 11:21

            I have a prime-ng table of shops, where I can remove and add shops to a list.

            The behavior: When a shop is added, the ChildComponent emits an event to ParentComponent which then adds the shop to the list and updates the input observable of the ChildComponent so that the shop no longer appears in the table.

            The issue: The above behavior works fine except when the table is filtered, then when adding a shop the table is not updated even though I can see that the table array has been updated correctly in the component. However, when another shop is added (in the same filtered table) it works fine, and then both shops are removed from the table.

            The table is part of a pure component (child):

            ...

            ANSWER

            Answered 2021-Jun-08 at 11:21

            I followed the answer in this question and it worked for me, but I still don't fully understand why it didn't work on first addition then it worked on the next ones previously.

            Source https://stackoverflow.com/questions/67874273

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

            Vulnerabilities

            No vulnerabilities reported

            Install EventEmitter

            You can install using 'npm i wolfy87-eventemitter' or download it from GitHub, npm.

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