To make only one module persistent with vuex-persistedstate, you can configure the plugin to only persist the state of that specific module. Here’s how you can do it:

First, install vuex-persistedstate if you haven’t already:

npm install vuex-persistedstate

Then, configure it in your Vuex store:

// store/index.js

import Vue from 'vue';
import Vuex from 'vuex';
import createPersistedState from 'vuex-persistedstate';

Vue.use(Vuex);

const moduleToPersistState = {
  state: {
    // Your state here
  },
  mutations: {
    // Your mutations here
  },
  actions: {
    // Your actions here
  },
  getters: {
    // Your getters here
  }
};

export default new Vuex.Store({
  modules: {
    moduleToPersist: moduleToPersistState,
    // Other modules here
  },
  plugins: [createPersistedState({
    key: 'moduleToPersist' // Specify the key for the module you want to persist
  })]
});

In the above configuration, moduleToPersist is the module that you want to make persistent.

The createPersistedState plugin is configured with the key option set to 'moduleToPersist', which ensures that only the state of the moduleToPersist module will be persisted.

We replace 'moduleToPersist' with the name of your module.

With this setup, only the state of the moduleToPersist module will be persisted using vuex-persistedstate, while other modules’ state will not be persisted.