canonical/node_modules/eslint-plugin-import/lib/rules/default.js

Canonical code style linter and formatter for JavaScript, SCSS and CSS.

'use strict';

var _interopRequireDefault = require('babel-runtime/helpers/interop-require-default')['default'];

var _coreGetExports = require('../core/getExports');

var _coreGetExports2 = _interopRequireDefault(_coreGetExports);

module.exports = function (context) {

  function checkDefault(specifierType, node) {

    // poor man's Array.find
    var defaultSpecifier = undefined;
    node.specifiers.some(function (n) {
      if (n.type === specifierType) {
        defaultSpecifier = n;
        return true;
      }
    });

    if (!defaultSpecifier) return;
    var imports = _coreGetExports2['default'].get(node.source.value, context);
    if (imports == null) return;

    if (imports.errors.length) {
      context.report({
        node: node.source,
        message: 'Parse errors in imported module ' + ('\'' + node.source.value + '\'.')
      });
    } else if (!imports.hasDefault) {
      context.report(defaultSpecifier, 'No default export found in module.');
    }
  }

  return {
    'ImportDeclaration': checkDefault.bind(null, 'ImportDefaultSpecifier'),
    'ExportNamedDeclaration': checkDefault.bind(null, 'ExportDefaultSpecifier')
  };
};
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