Storybook does not see Angular component's styles after upgrade to Angular 19

[dnlrbz]

Summary

After upgrade of Angular from 18 to 19, Storybook throws errors, because styles have value of [undefined] in component decorator, when compiling the component in storybook.

The app itself works normally, so there must be something wrong with Storybook library or config.

---

styles are undefined:

what storybook shows, because Angular compiler calls styles.trim()

---

config:

// root level .storybook/main.js file
import path from 'path';

const config = {
    stories: [],
    addons: [
        '@storybook/addon-essentials',
        '@storybook/addon-themes',
        {
            name: '@storybook/addon-styling-webpack',
            options: {
                rules: [
                    {
                        test: /\.(scss|css)$/,
                        use: [
                            {
                                loader: 'style-loader',
                            },
                            {
                                loader: 'css-loader',
                            },
                            {
                                loader: 'postcss-loader',
                                options: {
                                    postcssOptions: {
                                        plugins: function () {
                                            return [require('precss'), require('autoprefixer')];
                                        },
                                    },
                                },
                            },
                            {
                                loader: require.resolve('sass-loader'),
                                options: {
                                    implementation: require('sass'),
                                    sassOptions: {
                                        includePaths: [path.resolve(__dirname, '../node_modules')],
                                    },
                                },
                            },
                        ],
                    },
                ],
            },
        },
    ],
    framework: {
        name: '@storybook/angular',
        options: {},
    },
    staticDirs: ['../public'],
    docs: {
        autodocs: true,
    },
};

---

is it a bug in Storybook or something is wrong in the config?

Additional information

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