Discussion on: Optional chaining: What is it, and how can you add it to your JavaScript application right now?

[Ignacio Rivas]

This works for me:

const {
  override,
  addBabelPlugins,
} = require('customize-cra');

...

module.exports = override(
  ...
  addBabelPlugins('@babel/plugin-proposal-optional-chaining'),
  ...
);