vuex如何在非组件中调用mutations方法

import {mapMutations} from 'vuex'
import {SET_IS_LOGIN} from 'store/mutation-types'
export default {
    methods: {
        ...mapMutations({
            set_is_login: SET_IS_LOGIN
        }),
        init() {
            this.set_is_login(true)
        }
    }
}

import store from 'store'
import {SET_IS_LOGIN} from 'store/mutation-types'
function init() {
    store.commit(SET_IS_LOGIN, true)
}

mutations: {
  increment (state, payload) {
    state.count += payload.amount
  }
}

store.commit('increment', {
  amount: 10
})

store.commit({
  type: 'increment',
  amount: 10
})

mutations: {
  increment (state, payload) {
    state.count += payload.amount
  }
}

// mutation-types.js
export const SOME_MUTATION = 'SOME_MUTATION'

// store.js
import Vuex from 'vuex'
import { SOME_MUTATION } from './mutation-types'

const store = new Vuex.Store({
  state: { ... },
  mutations: {
    // 我们可以使用 ES2015 风格的计算属性命名功能来使用一个常量作为函数名
    [SOME_MUTATION] (state) {
      // mutate state
    }
  }
})

mutations: {
  someMutation (state) {
    api.callAsyncMethod(() => {
      state.count++
    })
  }
}

import { mapMutations } from 'vuex'
export default {
  // ...
  methods: {
    ...mapMutations([
      'increment', // 将 `this.increment()` 映射为 `this.$store.commit('increment')`
      // `mapMutations` 也支持载荷：
      'incrementBy' // 将 `this.incrementBy(amount)` 映射为 `this.$store.commit('incrementBy', amount)`
    ]),
    ...mapMutations({
      add: 'increment' // 将 `this.add()` 映射为 `this.$store.commit('increment')`
    })
  }
}