In your .babelrc
file, change
{ "presets": ["env"] }
to
{ "presets": ["@babel/preset-env"] }
(and install that package if you haven’t already).
In your .babelrc
you are still referencing the package babel-preset-env
(which is for 6.x), you want to reference @babel/preset-env
instead (which is for 7.x).
https://github.com/babel/babel/issues/6186#issuecomment-366556833
Note: you should also make this change in webpack.config.js
if it is there as well.
Here is the sample webpack config section where you should change the preset:
use: {
loader: 'babel-loader',
options: {
// Here you should change 'env' to '@babel/preset-env'
presets: ['@babel/preset-env'],
},
},