• First, define the initial state in the Vuex store for the toggle bar. For example:

const state = {
  sidebar: {
    opened: Cookies.get('sidebarStatus') ? !!+Cookies.get('sidebarStatus') : true,
    withoutAnimation: false,
  }
};

const mutations = {
  TOGGLE_SIDEBAR: state => {
    state.sidebar.opened = !state.sidebar.opened;
    state.sidebar.withoutAnimation = false;
    if (state.sidebar.opened) {
      Cookies.set('sidebarStatus', 1);
    } else {
      Cookies.set('sidebarStatus', 0);
    }
  },
  ...
}

const actions = {
  toggleSideBar({ commit }) {
    commit('TOGGLE_SIDEBAR');
  },
  ...
}

• Assuming that the structure of our Vue application follows the pattern of Layout > NavBar > Hamburger, we can implement Vuex in the NavBar component to manage the state and behavior of the Hamburger component.

In NavBar.vue:

<template>
    <hamburger id="hamburger-container" :is-active="sidebar.opened" class="hamburger-container" @toggleClick="toggleSideBar" />
</template>
export default {
  components: {
    Hamburger,
  },
  computed: {
    ...mapGetters([
      'sidebar',
    ]),
  },
  methods: {
    toggleSideBar() {
      this.$store.dispatch('app/toggleSideBar');
    },
  },
};

In Hamburger.vue:

<template>
  <div style="padding: 0 15px;" @click="toggleClick">
    <svg
      :class="{'is-active':isActive}"
      class="hamburger"
      viewBox="0 0 1024 1024"
      xmlns="http://www.w3.org/2000/svg"
      width="64"
      height="64"
    >
      <path d="M408 442h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8zm-8 204c0 4.4 3.6 8 8 8h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56zm504-486H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zm0 632H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zM142.4 642.1L298.7 519a8.84 8.84 0 0 0 0-13.9L142.4 381.9c-5.8-4.6-14.4-.5-14.4 6.9v246.3a8.9 8.9 0 0 0 14.4 7z" />
    </svg>
  </div>
</template>

<script>
export default {
  name: 'Hamburger',
  props: {
    isActive: {
      type: Boolean,
      default: false,
    },
  },
  methods: {
    toggleClick() {
      this.$emit('toggleClick');
    },
  },
};
</script>

<style scoped>
.hamburger {
  display: inline-block;
  vertical-align: middle;
  width: 20px;
  height: 20px;
}

.hamburger.is-active {
  transform: rotate(180deg);
}
</style>

So the behavior depends on `isActive` which is controlled and backup by Vuex and Cookie.