Fix the TypeError: MiniCssExtractPlugin is not a constructor
A small bug is present in MiniCssExtractPlugin 2.5.0 that causes the following error:
TypeError: MiniCssExtractPlugin is not a constructor
Solution 1
Fortunately, this error was already fixed in version 2.5.1 so a simple update can solve this problem
Solution 2
If for any reason you cannot update the package, you can use the following syntax in your webpack config file:
const MiniCssExtractPlugin = require("mini-css-extract-plugin").default;