is-promise | Test whether an object looks like a promises-a promise | Reactive Programming library

Please do correct me if I'm wrong about anything:

The JS runtime engine agents are driven by an event loop, which collects any user and other events, enqueuing tasks to handle each callback.

The event loop runs continuously and has the following thought process:

• Is the execution context stack (commonly referred to as the call stack) empty?
• If it is, then insert any microtasks in the microtask queue (or job queue) into the call stack. Keep doing this until the microtask queue is empty.
• If microtask queue is empty, then insert the oldest task from the task queue (or callback queue) into the call stack

So there are two key differences b/w how tasks and microtasks are handled:

• Microtasks (e.g. promises use microtask queue to run their callbacks) are prioritised over tasks (e.g. callbacks from othe web APIs such as setTimeout)
• Additionally, all microtasks are completed before any other event handling or rendering or any other task takes place. Thus, the application environment is basically the same between microtasks.

Promises were introduced in ES6 2015. I assume the microtask queue was also introduced in ES6.

What was the motivation for introducing the microtask queue? Why not just keep using the task queue for promises as well?

Update #1 - I'm looking for a definite historical reason(s) for this change to the spec - i.e. what was the problem it was designed to solve, rather than an opinionated answer about the benefits of the microtask queue.

• In depth: Microtasks and the JavaScript runtime environment
• HTML spec event loop processing model
• Javascript-hard-parts-v2
• loupe - Visualisation tool to understand JavaScript's call stack/event loop/callback queue interaction
• Using microtasks in JavaScript with queueMicrotask()

I'm a beginner in ReactJs so I'm sorry if this is a very noob question. I need help. I used npm cache clean --force because there was another error and a site recommended i use npm cache clean --force. Now, I can't create a react app. I tried reinstalling NodeJS.

I can't use npx create-react-app to create my react project.

The console give out this:

Must use import to load ES Module: C:\Users\user\AppData\Roaming\npm-cache\_npx\4536\node_modules\create-react-app\node_modules\is-promise\index.js // require() of ES modules is not supported. // require() of C:\Users\user\AppData\Roaming\npm-cache\_npx\4536\node_modules\create-react-app\node_modules\is-promise\index.js from C:\Users\user\AppData\Roaming\npm-cache\_npx\4536\node_modules\create-react-app\node_modules\run-async\index.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules. // Instead rename C:\Users\user\AppData\Roaming\npm-cache\_npx\4536\node_modules\create-react-app\node_modules\is-promise\index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from C:\Users\user\AppData\Roaming\npm-cache\_npx\4536\node_modules\create-react-app\node_modules\is-promise\package.json.

I've been trying for a some time to run a relatively simple React app. A co-worker started the project with create-react-app and for some reason my can't start the app.

Here's the error code:

So i have installed angular with npm install -g @angular/cli and updated npm, but if i try to run ngin terminal i get this output. I dont want to edit these files before im sure im not screwing them up

The error in the image shows up while creating a react app . It was working properly all this time, all i did was mkdir and cd to that dir.

This is what the error looks like...

npx: installed 99 in 36.634s Must use import to load ES Module: C:\Users\Neeraj\AppData\Roaming\npm-cache_npx\5172\node_modules\create-react-app\node_modules\is-promise\index.js require() of ES modules is not supported. require() of C:\Users\Neeraj\AppData\Roaming\npm-cache_npx\5172\node_modules\create-react-app\node_modules\is-promise\index.js from C:\Users\Neeraj\AppData\Roaming\npm-cache_npx\5172\node_modules\create-react-app\node_modules\run-async\index.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules. Instead rename C:\Users\Neeraj\AppData\Roaming\npm-cache_npx\5172\node_modules\create-react-app\node_modules\is-promise\index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from C:\Users\Neeraj\AppData\Roaming\npm-cache_npx\5172\node_modules\create-react-app\node_modules\is-promise\package.json.

Here is the command that I ran to try to create a React app and the resulting error log. I have been able to successfully run it three times before with the command $ npx create-react-app, but now every time that I run it, it does not work and instead returns an error related to ES modules. I have been experimenting with many ways to integrate React with Django, but I don't think that I edited any core files in doing so that would have caused this error. I am completely new to React and Node.js so any advice would be greatly appreciated.

I wanted to start new React project but I have some mistakes that I've never seen it before. When I write my core

I am attempting to create a nuxt app in the command line, going to build a Vue web app running off this and Vuetify. I am not sure what I am doing wrong but I run the exact scaffolding command that the docs tell me to run and it errors out everytime with this message.