How to define global variable in webpack?

@lottie 

In order to define a global variable in webpack, you can use the webpack.DefinePlugin in your webpack configuration file.

Here is an example of how to define a global variable named MY_GLOBAL_VARIABLE with the value of 'hello':

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const webpack = require('webpack');

module.exports = {
  // other webpack configurations
  plugins: [
    new webpack.DefinePlugin({
      MY_GLOBAL_VARIABLE: JSON.stringify('hello')
    })
  ]
};

After defining the global variable using webpack.DefinePlugin, you can access it in your code like this:

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console.log(MY_GLOBAL_VARIABLE); // Output: hello

Make sure to replace 'hello' with the value you want your global variable to have.