@mui/system/createTheme/index.d.ts

MUI System is a set of CSS utilities to help you build custom designs more efficiently. It makes it possible to rapidly lay out custom designs.

export { default } from "./createTheme.js";
export * from "./createTheme.js";
export { default as unstable_applyStyles } from "./applyStyles.js";
export * from "./applyStyles.js";