Auto Vuex mutations

store.js

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

function teenageAutoMutateTurtles(...props) {
  return props.reduce((o, p) => (o[`set${p[0].toUpperCase()}${p.slice(1)}`] = (s, v) => s[p] = v) && o, {});
}

export default new Vuex.Store({
  state: {
    herp: '',
    derp: ''
  },

  mutations: {
    ...teenageAutoMutateTurtles('herp', 'derp')
  },

  actions: {
    example({commit}) {
      commit('setHerp', 'Herpa!');
      commit('setDerp', 'Derpa!');
    }
  }
});