Vuex mutation not working synchronously but neither returning a promise

Question

My vuex mutation seems to not work synchronous. It looks like this:

mutations: {
    computeStatusData(state, status) {
        if (status.active !== true) { return }

        const started = new Date(status.startedAt);
        started.setHours(0, 0, 0, 0);
        const today = new Date();

        status.currentDay = Math.floor((today.getTime() - started.getTime()) / (1000 * 60 * 60 * 24));
        status.currentWeek = Math.floor(status.currentDay / 7);

        if (!status.programm.sections) { console.log('No Sections'); return; }

        for (let i = 0; i < status.programm.sections.length; i++) {
            if (status.currentWeek <= status.programm.sections[i].to) {
                status.currentSection = i;
                console.log('Current Section', status.currentSection)
                break;
            }
        }
        console.log('new status!', status)
    },

In a method of my component I call it like this:

    async loadSections() {

        await somethingElse();

        if (this.status && this.programm.sections) {
            console.log('Recomputing Status')
            this.status.progamm = this.programm;
            this.$store.commit('computeStatusData', status);
            console.log('updated Status', this.status)
        }

        this.$nextTick(() => { this.$forceUpdate(); }) 
    },

My console log looks like this:

Recomputing Status
updated Status {…}
Current Section 0
new status! {…}

If the mutation was synchronous it should log Current Section 0 and new Status! before updated Status but it doesn't.

It doesnt seem to return a Promise because when I do console.log(this.$store.commit('computeStatusData', status)); it just logs undefined .

Answer 1

The correct way of mutate a status is inside an action.

https://vuex.vuejs.org/guide/actions.html

A helpful question: Vuex Action vs Mutations