I use CSS modules with TypeScript (with https://github.com/Quramy/typed-css-modules).
TypeScript modules are transpiled to separate directory (dist/tsc). This does not copy CSS modules to that directory so when I try to run browserify with css-modulesify plugin (rootDir option is dist/tsc) I get Cannot find module error.
Of course, if I copy CSS modules to dist/tsc before running broweserify then it works fine but it would be nice to omit this step to make build faster.