@atlaskit/eslint-plugin-ui-styling-standard/dist/es2019/rules/no-global-styles/index.js

The eslint plugin to enforce and educate on Atlassian's UI Styling Standard

import { createLintRule } from '../utils/create-rule';
const restrictedFileTypes = ['.css', '.less', '.sass', '.scss'];
const restrictedImports = {
  '@emotion/core': ['Global'],
  '@emotion/react': ['Global'],
  'styled-components': ['createGlobalStyle', 'injectGlobal']
};
function isRestrictedImportSource(importSource) {
  return importSource in restrictedImports;
}
const rule = createLintRule({
  meta: {
    name: 'no-global-styles',
    docs: {
      description: 'Prevents global styles through CSS-in-JS or CSS module imports',
      recommended: true,
      severity: 'error'
    },
    messages: {
      'no-global-styles': "Move global declarations into local cssMap() or css() styles on their owning elements. Use @atlaskit/css-reset only for the supported global reset.",
      'no-css-modules': "Replace the CSS-file import with local cssMap() or css() declarations from @atlaskit/css and apply them on the owning elements; preserve the imported styles during migration."
    },
    type: 'problem'
  },
  create(context) {
    function checkFileType(node) {
      const importSource = node.source.value;
      if (restrictedFileTypes.some(suffix => importSource.endsWith(suffix))) {
        context.report({
          node: node.source,
          messageId: 'no-css-modules'
        });
      }
    }
    function checkImports(node) {
      const importSource = node.source.value;
      if (!isRestrictedImportSource(importSource)) {
        return;
      }
      for (const importName of restrictedImports[importSource]) {
        const specifier = node.specifiers.filter(isImportSpecifier).find(specifier => 'name' in specifier.imported && specifier.imported.name === importName);
        if (specifier) {
          context.report({
            node: specifier,
            messageId: 'no-global-styles'
          });
        }
      }
    }
    return {
      ImportDeclaration(node) {
        checkFileType(node);
        checkImports(node);
      },
      'JSXOpeningElement[name.name="style"]'(node) {
        context.report({
          node,
          messageId: 'no-global-styles'
        });
      }
    };
  }
});
export default rule;
function isImportSpecifier(node) {
  return node.type === 'ImportSpecifier';
}