Hello, redux-doctitle!

src/actions.js

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+import {TITLE_ACTIONS_SET} from "./defs";
+
+export const setDocumentTitle = (title = "") => {
+  return {
+    type: TITLE_ACTIONS_SET,
+    title: title
+  };
+};

src/defs.js

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+export const TITLE_ACTIONS_SET = "BTHLABS/REDUX_DOCTITLE_MW_TITLE_ACTIONS_SET";

src/index.js

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+export {setDocumentTitle} from "./actions";
+export {documentTitleMiddlewareFactory} from "./middleware";

src/middleware.js

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+import {TITLE_ACTIONS_SET} from "./defs";
+
+export const documentTitleMiddlewareFactory = (defaultTitleParts = []) => {
+  return (store, getState) => next => action => {
+    if (action.type == TITLE_ACTIONS_SET) {
+      let titleParts = [].concat(defaultTitleParts);
+      if (action.title) {
+        titleParts.unshift(action.title);
+      }
+
+      window.document.title = titleParts.join(" | ");
+    } else {
+      next(action);
+    }
+  };
+};