Vue.js is detected on this page. Devtools inspection is not available because it's in production mode or explicitly disabled by the author

Question

I'm trying to enable vue-devtools in Google Chrome. But I cannot enable it. I'm using vue.js inside the Laravel application.

My server runs using php artisan serve command.

Answer 1

I was seeing the error message in this question's title and this solution worked for me:

Add Vue.config.devtools = true to the file where you create the Vue instance (main.js for me).

Note that, as mentioned in this answer, you need to put the Vue.config.devtools = true line before you create your store in order for the Vuex part of the devtools to work. If you're creating your Vuex store in a separate file (e.g. store.js), you may need to have the Vue.config.devtools = true line in both your main.js file as well as the store.js file.

Below is what the changes looked like in my project:

Answer 2

1. If the page uses a production/minified build of Vue.js, devtools inspection is disabled by default so the Vue pane won't show up.
2. To make it work for pages opened via file:// protocol, you need to check "Allow access to file URLs" for this extension in Chrome's extension management panel.
3. I had to restart the chrome, and it worked :-)

Answer 3

Updated Aug 2022
So apparently as @kissu said, the answer below causes the released code to be an unoptimized one. This might be different than what you want if you want to check production code while being able to check Vue Dev Tools.

Just be aware of it. Unless you don't mind checking the released code in an unoptimized bundle, then the following script is fine. If you don't like the Vue.config.devtools value being static, it might be time to consider env variables or something similar.

Here's how to setup Environtment Variables in Vue

---

Alternative answer for Vue CLI 3.x
Besides what @NathanWailes has said, this is an alternative which allows the Dev Tools to be available through scripts instead of writing it in your main Vue entry (which is usually main.js or index.js).

You can do this by simply adding this script to package.json

scripts: {
   "start:dev": "vue-cli-service build --mode=development"
}

Explanation
This was because Vue.config.devtools are set to false by default in production mode as said by this GitHub Issue. But this has a work around, simply by using --mode=development flag provided in the documentation.

Then you can run using npm run start:dev and check the file in your dist/ folder! ;)

Answer 4

If your using CDN; make sure your not using a production (minified) build of the library.

Use: https://unpkg.com/vue@2.4.4/dist/vue.js

Instead of: https://unpkg.com/vue@2.4.4/dist/vue.min.js

You might need to do Ctrl+Alt+I for it to show up the first time. (Source)

Answer 5

You may use the dev version of vue.js. For example get it here: https://unpkg.com/vue@2.3.2

Answer 6

When using Laravel just make sure you run the proper webpack for your environment for development . Running

npm run watch

should build Vue with debug mode on. Using

npm run production

minifies Vue for production. This will save you having to remember to toggle the debug mode when building for production.

Answer 7

For me Installing latest Vue dev tools - link and enabling 'Allow access to file URLs' in extension settings resolved the issue.

Answer 8

make sure you're running a non-production build of Vue.js. https://github.com/vuejs/vue-devtools/issues/62

Answer 9

Just add into vue.config.js:

module.exports = {
  configureWebpack: {
    devtool: 'source-map'
  }
}

delete package-lock.json, node_modules, run npm i and VueJS Devtool will be working

Answer 10

you could try to set environment variable NODE_ENV to 'development' (e.g. set NODE_ENV=development on Windows or export NODE_ENV="development" under Linux) before launching Vue dev server.

Answer 11

In my case for Laravel 9 fresh installation, I forgot to run sail npm run dev.

Answer 12

If you're using Vite you can configure your environment directory via shared options. If you change that and have NODE_ENV set to production you'll receive this message when trying to inspect your app.

Answer 13

vite build --mode development

In order to enable Vue devtools for vite build --mode development you need this config:

// vite.config.js
import { defineConfig } from 'vite'

export default defineConfig(({ mode }) => ({
  ...
  define: {
    __VUE_PROD_DEVTOOLS__: mode !== 'production'
  },
}))

Answer 14

If you are using the CDN version of Vue, then you need to set the following configuration:

Vue.config.devtools = true;

After running this command, open the browser console and refresh the page. If the Vue DevTools still don't show up, then try clearing the cache in your browser.