node_modules/eslint-plugin-import/lib/rules/prefer-default-export.js

'use strict';

var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      url: (0, _docsUrl2['default'])('prefer-default-export') },

    schema: [] },


  create: function () {function create(context) {
      var specifierExportCount = 0;
      var hasDefaultExport = false;
      var hasStarExport = false;
      var hasTypeExport = false;
      var namedExportNode = null;

      function captureDeclaration(identifierOrPattern) {
        if (identifierOrPattern && identifierOrPattern.type === 'ObjectPattern') {
          // recursively capture
          identifierOrPattern.properties.
          forEach(function (property) {
            captureDeclaration(property.value);
          });
        } else if (identifierOrPattern && identifierOrPattern.type === 'ArrayPattern') {
          identifierOrPattern.elements.
          forEach(captureDeclaration);
        } else {
          // assume it's a single standard identifier
          specifierExportCount++;
        }
      }

      return {
        'ExportDefaultSpecifier': function () {function ExportDefaultSpecifier() {
            hasDefaultExport = true;
          }return ExportDefaultSpecifier;}(),

        'ExportSpecifier': function () {function ExportSpecifier(node) {
            if (node.exported.name === 'default') {
              hasDefaultExport = true;
            } else {
              specifierExportCount++;
              namedExportNode = node;
            }
          }return ExportSpecifier;}(),

        'ExportNamedDeclaration': function () {function ExportNamedDeclaration(node) {
            // if there are specifiers, node.declaration should be null
            if (!node.declaration) return;var

            type = node.declaration.type;

            if (
            type === 'TSTypeAliasDeclaration' ||
            type === 'TypeAlias' ||
            type === 'TSInterfaceDeclaration' ||
            type === 'InterfaceDeclaration')
            {
              specifierExportCount++;
              hasTypeExport = true;
              return;
            }

            if (node.declaration.declarations) {
              node.declaration.declarations.forEach(function (declaration) {
                captureDeclaration(declaration.id);
              });
            } else {
              // captures 'export function foo() {}' syntax
              specifierExportCount++;
            }

            namedExportNode = node;
          }return ExportNamedDeclaration;}(),

        'ExportDefaultDeclaration': function () {function ExportDefaultDeclaration() {
            hasDefaultExport = true;
          }return ExportDefaultDeclaration;}(),

        'ExportAllDeclaration': function () {function ExportAllDeclaration() {
            hasStarExport = true;
          }return ExportAllDeclaration;}(),

        'Program:exit': function () {function ProgramExit() {
            if (specifierExportCount === 1 && !hasDefaultExport && !hasStarExport && !hasTypeExport) {
              context.report(namedExportNode, 'Prefer default export.');
            }
          }return ProgramExit;}() };

    }return create;}() };
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