Could not find plugin “proposal-numeric-separator”

Question

How to fix Could not find plugin \"proposal-numeric-separator\", I get this error when I try to build my React application, I have not ejected the application y

Answer 1

Its just a 4 step process.

Reason: This happens because of a package missing in babel. This will happen even if you create angular app using ng new command.

Solution

1. Install plugin-proposal-numeric-separator using the following code in terminal.

   npm install --save @babel/plugin-proposal-numeric-separator
   

2. Once it is done navigate to the file as shown below.

   node_modules > @babel > preset-env > available-plugins.js

3. In available-plugins.js below exports.default = void 0; copy and paste the following code.

   var _pluginProposalNumericSeparator = _interopRequireDefault(require("@babel/plugin-proposal-numeric-separator"));
   

4. In available-plugins.js within var _default object declaration copy and paste the following code.

   "proposal-numeric-separator": _pluginProposalNumericSeparator.default,
   

And it is done.