Error: Expected an opening square bracket.

[guydumais]

The compilation was failing using YARN BUILD with Next.js 10 and React.js 17:

Failed to compile.

Error: Expected an opening square bracket.

> Build error occurred
Error: > Build failed because of webpack errors
    at ...\node_modules\next\dist\build\index.js:15:918
    at async ...\node_modules\next\dist\build\tracer.js:3:470
error Command failed with exit code 1.

To fix it, I replaced the code in postcss.config.js with this one :

module.exports = {
  plugins: {
    'postcss-flexbugs-fixes': {},
    'postcss-preset-env': {
      autoprefixer: {
        flexbox: 'no-2009',
      },
      stage: 3,
      features: {
        'custom-properties': false,
      },
    },
    '@fullhuman/postcss-purgecss': {
      content: [
          './pages/**/*.{js,jsx,ts,tsx}',
          './components/**/*.{js,jsx,ts,tsx}'
      ],
      defaultExtractor: content => content.match(/[\w-/:]+(?<!:)/g) || [],
      safelist: ["html", "body"]
    },
    'tailwindcss': {}
  }
}

[fgiuliani]

Hey @guydumais thanks for your comment and sorry for the super late response.

Could you try now to see if it's working correctly? We changed many things in the tutorial, now that we have a new React SDK:

https://www.npmjs.com/package/@storyblok/react

https://www.storyblok.com/tp/next-js-react-guide