Angular storybookV5 doesn't work on IE11

[avistheripper]

When running 'npm run storybook' and opening the application on IE11, a syntax error occurs, linking to the code:
.storybook/config.js

callback: () => {
// apply the custom options
// setCustomOptions();
configure(require.context('../src', true, /.stories.ts$/), module);
}
After replacing the arrow function with es5 function error disappears but another one comes out pointing at button.component.ts