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Next.js: TaggedTemplateExpression not run when envs are defined in .babelrc #78

@zentuit

Description

@zentuit

I'm seeing something very strange and I don't know why its happening.

If you have a .babelrc file defined as so:

{
  "env": {
    "development": {
      "presets": ["next/babel"]
    },
    "production": {
      "presets": ["next/babel"]
    }
  },
  "plugins": [
    ["styled-components", { "ssr": true, "displayName": true, "preprocess": false } ]
  ]
}

then when you build the app, the TaggedTemplateExpression part of babel-plugin-styled-components is never called. That results in code that looks like this:

var _templateObject = (0, _taggedTemplateLiteral3.default)(['\n  color: red;\n  font-size: 50px;\n'], ['\n  color: red;\n  font-size: 50px;\n']);

var Title = _styledComponents2.default.h1(_templateObject);

rather than the expected:

var Title = _styledComponents2.default.h1.withConfig({
  displayName: 'pages__Title',
  componentId: 'tr8ekl-0'
})(['color:red;font-size:50px;']);

I replicated it using Next.js example with-styled-components.

Could someone verify that they see the same thing?

  • download that example linked above
  • change its .babelrc file to the one above
  • do a npm run build
  • look at the /.next/dist/pages/index.js file to see if the styled component has a withConfig

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