Does it not work with custom value for NODE_ENV?

[j-a-h-i-r]

My NODE_ENV is set to custom. I'm trying to set up ant design in a CRA project. I'm following the guide here, https://ant.design/docs/react/use-with-create-react-app. I created a craco.config.js file like the following,

const CracoLessPlugin = require('craco-less');

module.exports = {
  plugins: [
    {
      plugin: CracoLessPlugin,
      options: {
        lessLoaderOptions: {
          lessOptions: {
            modifyVars: {
              '@primary-color': '#1DA57A'
            },
            javascriptEnabled: true,
          },
        },
      },
    },
  ],
};

But upon npm start (craco start), I am greeted with the following error,

(node:16620) UnhandledPromiseRejectionWarning: Error: Found an unhandled loader in the custom webpack config: E:\project\node_modules\style-loader\dist\cjs.js

I looked at the source and it seems to be checking the environment variable,

if (
      (context.env === "development" || context.env === "test") &&
      rule.loader.includes(`${pathSep}style-loader${pathSep}`)
    ) {
      lessRule.use.push({
        loader: rule.loader,
        options: {
          ...rule.options,
          ...(pluginOptions.styleLoaderOptions || {}),
        },
      });
    }

After I set my NODE_ENV to development this error is gone.

I am not exactly sure what caused the issue. So my question is does craco-less not support setting a custom value to NODE_ENV?