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Npm WARN deprecated babel-preset-es2015@6.24.1: Thanks for using Babel: we recommend using babel-preset-env now: please


Npm WARN deprecated babel-preset-es2015@6.24.1: Thanks for using Babel: we recommend using babel-preset-env now: please

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Npm WARN deprecated babel-preset-es2015@6.24.1: Thanks for using Babel: we recommend using babel-preset-env now: please
Tag : javascript , By : Sigfrieg
Date : November 24 2020, 03:01 PM

it fixes the issue When i install , I found solution after my Research
npm install browserify babelify babel-preset-env

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Using webpack with babel and babel-preset-react and babel-preset-es2015


Tag : javascript , By : user187301
Date : March 29 2020, 07:55 AM
To fix the issue you can do I've had the same issue and it seems to have gone away after I removed the node_modules directory and reinstalled all the dependencies.

Whats the difference between babel-preset-es2015 and babel-preset-env?


Tag : javascript , By : MikeG
Date : March 29 2020, 07:55 AM
this will help The babel-preset-es20XX (15, 16, 17) presets include transforms needed to convert features added in that specific year to code that is compatible with the previous version.
babel-preset-env includes transforms for all features that have landed in the spec, but only enables the ones needed to make the features work based on the set of environments you've provided to it. If you pass no options to env it essentially works like es2015, es2016, es2017 all together.

browserify fails to parse jsx despite using babel-preset-react, babel-preset-es2015 and babel-preset-stage-3


Tag : reactjs , By : Vitalik
Date : March 29 2020, 07:55 AM
With these it helps By default, browserify does not transpile included files that are outside your project. Since the component that was causing the issue was being included from node_modules, I had to configure its package.json file to ensure that browserify knew that its source was not transpiled and that it had to transpile it when it was being included.
I was able to do that by including this in my node_modules component's package.json:
"browserify": { "transform": [ "babelify" ] }

babel vs babel-core vs babel-loader vs babel-preset-2015 vs babel-preset-react vs babel-polyfill


Tag : webpack , By : Sandip
Date : March 29 2020, 07:55 AM
it should still fix some issue I was setting up Webpack for my React project and got confused between babel, babel-core, babel-loader, babel-preset-2015 and babel-preset-react. I know that Babel is needed to transform ES7 or ES6 code to ES5 but in my package.json I have installed all these dependencies except Babel and they also as devDependencies. , babel
Babel doesn't do anything,It basically acts like const babel = code => code; 
by parsing the code and then generating the same code back out again.

You will need to add some plugins for Babel to do anything like transpiling es6,JSX.
if you want to use babel in your real project, you need to install babel but 
there's no babel package available.

   babel split it up into two separate packages: babel-cli and babel-core

   **babel-cli** : which can be used to compile files from the command line.

   **babel-core** : if you want to use the Node API you can install babel-
      core, Same as "babel-cli" except you would use it programmatically inside your app.

   use "babel-cli" or "babel-core" to compile your files before production.
We can add features(es6,JSX) one at a time with babel plugins(es2015), 
    or 
we can use babel presets to include all the features(es6) of a particular year.

Presets make setup easier.
babel-preset-env supports es2015 features and replaces es2015, es2016, 
  es2017 and latest.

So use babel-preset-env, it behaves exactly the same as babel-preset-latest 
 (or babel-preset-es2015, babel-preset-es2016, and babel-preset-es2017 together).
transform JSX into createElement calls like transforming react pure class to 
   function and transform react remove prop-types.
Without babel-polyfill, babel only allows you to use features like arrow 
 functions, destructuring, default arguments, and other syntax-specific 
 features introduced in ES6.

The new ES6 built-ins like Set, Map and Promise must be polyfilled

To include the polyfill you need to require it at the top of the entry point 
  to your application. 
you done with babel-core, babel-cli, and why need preset, plugins and now 
  you are compiling ES6 to ES5 on a file-by-file basis by babel-cli every time.

to get rid-off this, you need to bundle the task/js file. For that you need 
   Webpack.

Loaders are kind of like “tasks”, They gives the ability to leverage 
 webpack's bundling capabilities for all kinds of files by converting them 
 to valid modules that webpack can process.

Webpack has great Babel support through babel-loader
When you deploy your app, modules in dependencies need to be installed or 
your app won't work. Modules in devDependencies don't need to be installed 
on the production server since you're not developing on that machine.

These packages are only needed for development and testing.
as you read the above states, You need some presets and loaders to transpile 
 es2015 or JSX files.
Since Babel 7 the Babel team switched to scoped packages, so you now 
have to use @babel/core instead of babel-core.

Your dependencies will need to be modified like so:

babel-cli -> @babel/cli. Ex:  babel- with @babel/.

babel-cli vs babel-preset-es2015 vs babel-register vs babel-core?


Tag : javascript , By : Ohad Barzilay
Date : March 29 2020, 07:55 AM
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