Seems that hierarchical error handling works..

TreeTable component seems to work too.
Edit is half-way through. Create / delete are TBD.

client/src/lib/axios.js

@@ -0,0 +1,18 @@
+'use strict';
+
+import csfrToken from 'csfrToken';
+import axios from 'axios';
+import interoperableErrors from '../../../shared/interoperable-errors';
+
+const axiosInst = axios.create({
+    headers: {'X-CSRF-TOKEN': csfrToken}
+});
+
+const axiosWrapper = {
+    get: (...args) => axiosInst.get(...args).catch(error => { throw interoperableErrors.deserialize(error.response.data) || error }),
+    put: (...args) => axiosInst.put(...args).catch(error => { throw interoperableErrors.deserialize(error.response.data) || error }),
+    post: (...args) => axiosInst.post(...args).catch(error => { throw interoperableErrors.deserialize(error.response.data) || error }),
+    delete: (...args) => axiosInst.delete(...args).catch(error => { throw interoperableErrors.deserialize(error.response.data) || error })
+};
+
+export default axiosWrapper;