Cannot find module babel-preset-es2015

Question

Getting same error again again: Error: Cannot find module 'babel-preset-es2015'.

Full error log:

ERROR in ./main.js Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Cannot find module 'babel-preset-es2015' from 'C:\Users\hp\Desktop\reactApp'  at Function.module.exports [as sync] (C:\Users\hp\Desktop\reactApp\node_modules\resolve\lib\sync.js:43:15)  at resolveStandardizedName (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:101:31)  at resolvePreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:58:10)  at loadPreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\files\plugins.js:77:20)  at createDescriptor (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:154:9)  at items.map (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:109:50)  at Array.map ()  at createDescriptors (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:109:29)  at createPresetDescriptors (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:101:10)  at passPerPreset (C:\Users\hp\Desktop\reactApp\node_modules\@babel\core\lib\config\config-descriptors.js:58:96) @ multi (webpack)-dev-server/client?http://localhost:8080 (webpack)/hot/dev-server.js ./main.js main[2] 

Answer 1

For Babel version 6 the package name is babel-preset-es2015 and for Babel version 7 the package name is @babel/preset-es2015.

From the error it seems that you're using version 7. The es20XX-presets are deprecated, so I recommend you switch to @babel/preset-env.

First install the preset (using npm):

npm install --save-dev @babel/preset-env 

Then add the preset to your .babelrc

{     "presets": ["@babel/preset-env"] } 

Answer 2

Thing in that the babel 7 uses @babel/preset-env. Other presets are deprecated Here saying about this https://babeljs.io/docs/en/v7-migration#yearly-preset-deprecations-blog-2017-12-27-nearing-the-70-releasehtml-deprecated-yearly-presets-eg-babel-preset-es20xx

You should specify in a configuration file (I don't know if you are using Webpack or something else) preset as "@babel/preset-env". Install it through npm install --save-dev @babel/preset-env

For example, you are using Webpack module bundler. In that case, specify like this:

use: {       loader: "babel-loader",       options: {                 presets: ["@babel/preset-env"]       } } 

Here is a documentation https://webpack.js.org/loaders/babel-loader/ if you suddenly will need.

Happy coding!