Custom fields feature.

client/src/store/modules/errorLog.js

@@ -0,0 +1,28 @@
+const state = {
+  logs: [],
+};
+
+const mutations = {
+  ADD_ERROR_LOG: (s, log) => {
+    s.logs.push(log);
+  },
+  CLEAR_ERROR_LOG: (s) => {
+    s.logs.splice(0);
+  }
+}
+
+const actions = {
+  addErrorLog({ commit }, log) {
+    commit('ADD_ERROR_LOG', log);
+  },
+  clearErrorLog({ commit }) {
+    commit('CLEAR_ERROR_LOG');
+  },
+}
+
+export default {
+  namespaced: true,
+  state,
+  mutations,
+  actions,
+};