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node_modules/eslint-plugin-import/lib/rules/no-default-export.js 3.98 KB
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  'use strict';
  
  module.exports = {
    meta: {
      docs: {}
    },
  
    create(context) {
      // ignore non-modules
      if (context.parserOptions.sourceType !== 'module') {
        return {};
      }
  
      const preferNamed = 'Prefer named exports.';
      const noAliasDefault = (_ref) => {
        let local = _ref.local;
        return `Do not alias \`${local.name}\` as \`default\`. Just export ` + `\`${local.name}\` itself instead.`;
      };
  
      return {
        ExportDefaultDeclaration(node) {
          context.report({ node, message: preferNamed });
        },
  
        ExportNamedDeclaration(node) {
          node.specifiers.forEach(specifier => {
            if (specifier.type === 'ExportDefaultSpecifier' && specifier.exported.name === 'default') {
              context.report({ node, message: preferNamed });
            } else if (specifier.type === 'ExportSpecifier' && specifier.exported.name === 'default') {
              context.report({ node, message: noAliasDefault(specifier) });
            }
          });
        }
      };
    }
  };
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