"react-redux" uses UMD style loading to work in many different environments. It assumes that "react" and "redux" are both included via `require("react")` as in node or browserify, but the paths to our react and redux installation are different. If upgrading react-redux, define the correct paths and replace the require statements for the module.exports case with the correct paths. Path to react: "devtools/client/shared/vendor/react" Path to redux: "devtools/client/shared/vendor/redux"