The Vue app for logging in with Metamask is unable to communicate with the Metamask extension due to a lack of interaction between the store components and the frontend interface

After following a tutorial to create a Metamask login app with Vue, I ran into some issues. The code provided lacked a defined project structure, so I decided to organize it in my own Github repo here. However, despite compiling successfully, the button to connect/install Metamask was unresponsive.

The code snippet responsible for connecting to Metamask is as follows:

<template>
  <div>
    <button
      color="primary"
      large
      :disabled="buttonDisabled"
      v-on:click="performAction"
    >
      <img src="../assets/metamaskloginbutton.png" class="metamask-logo" />
      <span v-if="isMetaMaskInstalled()">Login with Metamask</span>
      <span v-if="!isMetaMaskInstalled()">{{ buttonInstallText }}</span>
    </button>
  </div>
</template>

The function intended to check if Metamask is installed always returns false even when Metamask is indeed installed on the browser being used.

Upon consulting the code's author, I was advised that the issue might stem from not accounting for the Vuex store and suggested adding

ethereum: state => { if(process.client) { return window.ethereum } }
, without specifying where to include it. Researching the topic led me to articles like this one here, but I still struggled to grasp the concept. Attempting to integrate the store modification in store/index.js didn't yield successful results.

Here's how I modified the store/index.js file:

import { createStore } from "vuex";

export default createStore({
  state: {},
  getters: {
    ethereum: () => {
      if (process.client) {
        return window.ethereum;
      }
    },
  },
  mutations: {},
  actions: {},
  modules: {},
});

I had to remove state from

ethereum: state => { if(process.client) { return window.ethereum } }
due to compatibility issues with Prettier. Despite these adjustments, the isMetaMaskInstalled() function continues to return false. I suspect the placement of
ethereum: state => { if(process.client) { return window.ethereum } }
in the file may be causing the problem. Where should this code actually go?

Answer №1

The issue arose from process.client consistently returning false.

ethereum: () => {
  if (process.client) {
    return window.ethereum;
}

I made a modification to:

ethereum: () => {
  return window.ethereum;
}

As a result, my Metamask login window successfully appeared

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