Why don't polyfills for IE work in production?

Question

JavaScript

Hello!
When building, everything works fine except for IE.
Writes an error

SCRIPT1003: Предполагается наличие ':'
vendors.a2a446f14c4d7ea65b2c.chunk.js (1,77544)

polyphiles

import 'react-app-polyfill/ie9';
import 'react-app-polyfill/ie11';
import 'react-app-polyfill/stable';
import 'raf/polyfill';

don't help.

https://cdn.polyfill.io/v2/polyfill.js?features=es6

Also without results.
The question is what am I doing wrong?
But when i change in tsconfig c es6 yf es5

"compilerOptions": {   
    "target": "es5",

frontend, after npm start it starts working in IE.
Doesn't work in production