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

'use strict';

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _ExportMap = require('../ExportMap');

var _ExportMap2 = _interopRequireDefault(_ExportMap);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

module.exports = {
  meta: {
    docs: {}
  },

  create: function (context) {
    const named = new Map();

    function addNamed(name, node) {
      let nodes = named.get(name);

      if (nodes == null) {
        nodes = new Set();
        named.set(name, nodes);
      }

      nodes.add(node);
    }

    return {
      'ExportDefaultDeclaration': node => addNamed('default', node),

      'ExportSpecifier': function (node) {
        addNamed(node.exported.name, node.exported);
      },

      'ExportNamedDeclaration': function (node) {
        if (node.declaration == null) return;

        if (node.declaration.id != null) {
          addNamed(node.declaration.id.name, node.declaration.id);
        }

        if (node.declaration.declarations != null) {
          for (let declaration of node.declaration.declarations) {
            (0, _ExportMap.recursivePatternCapture)(declaration.id, v => addNamed(v.name, v));
          }
        }
      },

      'ExportAllDeclaration': function (node) {
        if (node.source == null) return; // not sure if this is ever true

        const remoteExports = _ExportMap2.default.get(node.source.value, context);
        if (remoteExports == null) return;

        if (remoteExports.errors.length) {
          remoteExports.reportErrors(context, node);
          return;
        }
        let any = false;
        remoteExports.forEach((v, name) => name !== 'default' && (any = true) && // poor man's filter
        addNamed(name, node));

        if (!any) {
          context.report(node.source, `No named exports found in module '${node.source.value}'.`);
        }
      },

      'Program:exit': function () {
        for (let _ref of named) {
          var _ref2 = _slicedToArray(_ref, 2);

          let name = _ref2[0];
          let nodes = _ref2[1];

          if (nodes.size <= 1) continue;

          for (let node of nodes) {
            if (name === 'default') {
              context.report(node, 'Multiple default exports.');
            } else context.report(node, `Multiple exports of name '${name}'.`);
          }
        }
      }
    };
  }
};
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