TypeScript: How to combine DefaultTheme with styled-components?

I have a module that is made with styled-components and export a theme

I want to combine the exported theme for styled from the module with my application theme.

I have tried the following in theme.ts:

import { theme as idCheckTheme } from '@pass-culture/id-check/src/theme'import { DefaultTheme } from 'styled-components/native'import './styled.d'export const theme: DefaultTheme = {  ...idCheckTheme,  appBarHeight: 64,}

I have also copied the styled.d.ts and added appBarHeight: number at the top.

When I start my application, I have the following error:

Property 'appBarHeight' is missing in type '{ colors: { black: ColorsEnum; error: ColorsEnum; greenValid: ColorsEnum; greyDark: ColorsEnum; greyMedium: ColorsEnum; greyLight: ColorsEnum; ... 4 more ...; primaryDark: ColorsEnum; }; typography: { ...; }; buttons: { ...; }; }' but required in type 'DefaultTheme'.  TS2741

I expected it to work, typing isn't complaining in IntelliJ.

How can I combine a styled-components theme into a new DefaultTheme with TypeScript?