How to fix eslint 'Unexpected token' with ... spread operator?

[icockrum]

A new create-react-app project throws an eslint 'Unexpected token' error with the use of the spread operator (aka {...} triple dots). I've looked around and found convos that alternately suggest editing .babelrc or .eslintrc or webpack.config.js or adding experimentalObjectRestSpread or babel-plugin-transform-object-rest-spread or updating babel-preset-stage (which is also said to be deprecated), but none of these solutions in the context of CRA, so I'm not even sure where to try applying these things. Any help, please?

Compiled with problems:
ERROR in ./src/App.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
SyntaxError: /Users/.../src/App.js: Unexpected token (16:26)
> 16 |       gsap.to(".box", {...});
     |                           ^