Where is the “vue.config.js” File?

vue.config.js is an optional config file used only in Vue CLI projects.
It allows you to customize how the Vue CLI builds your app (e.g., public path, dev server, webpack config, etc.)
If your project does not already have a vue.config.js, you can create one manually at the root level of your Vue project directory.

Project structure:

my-vue-app/
├── node_modules/
├── public/
├── src/
├── package.json
├── vue.config.js ← Here!

Example of a basic vue.config.js

You can add many other config options here like:

configureWebpack
chainWebpack
css
pluginOptions

Use only in Vue CLI projects

This file is only used when you’re using the Vue CLI (vue create my-app).
If you’re using Vite, Nuxt, or a manual setup (Webpack, etc.), vue.config.js will be ignored or unused.

Note: vue.config.js in Vue projects

vue.config.js is an optional config file used in Vue CLI projects.
It should be placed at the root of your project (same level as package.json).
It lets you customize build settings like publicPath, devServer, and Webpack config.
Not auto-generated but you can create it manually if needed.
Only works with Vue CLI (vue create my-app).
Not used in Vite, Nuxt, or other setups.