'use strict';var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {return typeof obj;} : function (obj) {return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;};





var _ignore = require('eslint-module-utils/ignore');
var _resolve = require('eslint-module-utils/resolve');var _resolve2 = _interopRequireDefault(_resolve);
var _visit = require('eslint-module-utils/visit');var _visit2 = _interopRequireDefault(_visit);
var _path = require('path');
var _readPkgUp2 = require('eslint-module-utils/readPkgUp');var _readPkgUp3 = _interopRequireDefault(_readPkgUp2);
var _object = require('object.values');var _object2 = _interopRequireDefault(_object);
var _arrayIncludes = require('array-includes');var _arrayIncludes2 = _interopRequireDefault(_arrayIncludes);
var _arrayPrototype = require('array.prototype.flatmap');var _arrayPrototype2 = _interopRequireDefault(_arrayPrototype);

var _ExportMap = require('../ExportMap');var _ExportMap2 = _interopRequireDefault(_ExportMap);
var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { 'default': obj };}function _toConsumableArray(arr) {if (Array.isArray(arr)) {for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) {arr2[i] = arr[i];}return arr2;} else {return Array.from(arr);}} /**
                                                                                                                                                                                                                                                                                                                                                                                 * @fileOverview Ensures that modules contain exports and/or all
                                                                                                                                                                                                                                                                                                                                                                                 * modules are consumed within other modules.
                                                                                                                                                                                                                                                                                                                                                                                 * @author René Fermann
                                                                                                                                                                                                                                                                                                                                                                                 */var FileEnumerator = void 0;var listFilesToProcess = void 0;
try {var _require =
  require('eslint/use-at-your-own-risk');FileEnumerator = _require.FileEnumerator;
} catch (e) {
  try {var _require2 =

    require('eslint/lib/cli-engine/file-enumerator'); // has been moved to eslint/lib/cli-engine/file-enumerator in version 6
    FileEnumerator = _require2.FileEnumerator;} catch (e) {
    try {
      // eslint/lib/util/glob-util has been moved to eslint/lib/util/glob-utils with version 5.3
      var _require3 = require('eslint/lib/util/glob-utils'),originalListFilesToProcess = _require3.listFilesToProcess;

      // Prevent passing invalid options (extensions array) to old versions of the function.
      // https://github.com/eslint/eslint/blob/v5.16.0/lib/util/glob-utils.js#L178-L280
      // https://github.com/eslint/eslint/blob/v5.2.0/lib/util/glob-util.js#L174-L269
      listFilesToProcess = function listFilesToProcess(src, extensions) {
        return originalListFilesToProcess(src, {
          extensions: extensions });

      };
    } catch (e) {var _require4 =
      require('eslint/lib/util/glob-util'),_originalListFilesToProcess = _require4.listFilesToProcess;

      listFilesToProcess = function listFilesToProcess(src, extensions) {
        var patterns = src.concat((0, _arrayPrototype2['default'])(src, function (pattern) {return extensions.map(function (extension) {return (/\*\*|\*\./.test(pattern) ? pattern : String(pattern) + '/**/*' + String(extension));});}));

        return _originalListFilesToProcess(patterns);
      };
    }
  }
}

if (FileEnumerator) {
  listFilesToProcess = function listFilesToProcess(src, extensions) {
    var e = new FileEnumerator({
      extensions: extensions });


    return Array.from(e.iterateFiles(src), function (_ref) {var filePath = _ref.filePath,ignored = _ref.ignored;return {
        ignored: ignored,
        filename: filePath };});

  };
}

var EXPORT_DEFAULT_DECLARATION = 'ExportDefaultDeclaration';
var EXPORT_NAMED_DECLARATION = 'ExportNamedDeclaration';
var EXPORT_ALL_DECLARATION = 'ExportAllDeclaration';
var IMPORT_DECLARATION = 'ImportDeclaration';
var IMPORT_NAMESPACE_SPECIFIER = 'ImportNamespaceSpecifier';
var IMPORT_DEFAULT_SPECIFIER = 'ImportDefaultSpecifier';
var VARIABLE_DECLARATION = 'VariableDeclaration';
var FUNCTION_DECLARATION = 'FunctionDeclaration';
var CLASS_DECLARATION = 'ClassDeclaration';
var IDENTIFIER = 'Identifier';
var OBJECT_PATTERN = 'ObjectPattern';
var ARRAY_PATTERN = 'ArrayPattern';
var TS_INTERFACE_DECLARATION = 'TSInterfaceDeclaration';
var TS_TYPE_ALIAS_DECLARATION = 'TSTypeAliasDeclaration';
var TS_ENUM_DECLARATION = 'TSEnumDeclaration';
var DEFAULT = 'default';

function forEachDeclarationIdentifier(declaration, cb) {
  if (declaration) {
    if (
    declaration.type === FUNCTION_DECLARATION ||
    declaration.type === CLASS_DECLARATION ||
    declaration.type === TS_INTERFACE_DECLARATION ||
    declaration.type === TS_TYPE_ALIAS_DECLARATION ||
    declaration.type === TS_ENUM_DECLARATION)
    {
      cb(declaration.id.name);
    } else if (declaration.type === VARIABLE_DECLARATION) {
      declaration.declarations.forEach(function (_ref2) {var id = _ref2.id;
        if (id.type === OBJECT_PATTERN) {
          (0, _ExportMap.recursivePatternCapture)(id, function (pattern) {
            if (pattern.type === IDENTIFIER) {
              cb(pattern.name);
            }
          });
        } else if (id.type === ARRAY_PATTERN) {
          id.elements.forEach(function (_ref3) {var name = _ref3.name;
            cb(name);
          });
        } else {
          cb(id.name);
        }
      });
    }
  }
}

/**
   * List of imports per file.
   *
   * Represented by a two-level Map to a Set of identifiers. The upper-level Map
   * keys are the paths to the modules containing the imports, while the
   * lower-level Map keys are the paths to the files which are being imported
   * from. Lastly, the Set of identifiers contains either names being imported
   * or a special AST node name listed above (e.g ImportDefaultSpecifier).
   *
   * For example, if we have a file named foo.js containing:
   *
   *   import { o2 } from './bar.js';
   *
   * Then we will have a structure that looks like:
   *
   *   Map { 'foo.js' => Map { 'bar.js' => Set { 'o2' } } }
   *
   * @type {Map<string, Map<string, Set<string>>>}
   */
var importList = new Map();

/**
                             * List of exports per file.
                             *
                             * Represented by a two-level Map to an object of metadata. The upper-level Map
                             * keys are the paths to the modules containing the exports, while the
                             * lower-level Map keys are the specific identifiers or special AST node names
                             * being exported. The leaf-level metadata object at the moment only contains a
                             * `whereUsed` property, which contains a Set of paths to modules that import
                             * the name.
                             *
                             * For example, if we have a file named bar.js containing the following exports:
                             *
                             *   const o2 = 'bar';
                             *   export { o2 };
                             *
                             * And a file named foo.js containing the following import:
                             *
                             *   import { o2 } from './bar.js';
                             *
                             * Then we will have a structure that looks like:
                             *
                             *   Map { 'bar.js' => Map { 'o2' => { whereUsed: Set { 'foo.js' } } } }
                             *
                             * @type {Map<string, Map<string, object>>}
                             */
var exportList = new Map();

var visitorKeyMap = new Map();

var ignoredFiles = new Set();
var filesOutsideSrc = new Set();

var isNodeModule = function isNodeModule(path) {return (/\/(node_modules)\//.test(path));};

/**
                                                                                             * read all files matching the patterns in src and ignoreExports
                                                                                             *
                                                                                             * return all files matching src pattern, which are not matching the ignoreExports pattern
                                                                                             */
var resolveFiles = function resolveFiles(src, ignoreExports, context) {
  var extensions = Array.from((0, _ignore.getFileExtensions)(context.settings));

  var srcFileList = listFilesToProcess(src, extensions);

  // prepare list of ignored files
  var ignoredFilesList = listFilesToProcess(ignoreExports, extensions);
  ignoredFilesList.forEach(function (_ref4) {var filename = _ref4.filename;return ignoredFiles.add(filename);});

  // prepare list of source files, don't consider files from node_modules

  return new Set(
  (0, _arrayPrototype2['default'])(srcFileList, function (_ref5) {var filename = _ref5.filename;return isNodeModule(filename) ? [] : filename;}));

};

/**
    * parse all source files and build up 2 maps containing the existing imports and exports
    */
var prepareImportsAndExports = function prepareImportsAndExports(srcFiles, context) {
  var exportAll = new Map();
  srcFiles.forEach(function (file) {
    var exports = new Map();
    var imports = new Map();
    var currentExports = _ExportMap2['default'].get(file, context);
    if (currentExports) {var

      dependencies =




      currentExports.dependencies,reexports = currentExports.reexports,localImportList = currentExports.imports,namespace = currentExports.namespace,visitorKeys = currentExports.visitorKeys;

      visitorKeyMap.set(file, visitorKeys);
      // dependencies === export * from
      var currentExportAll = new Set();
      dependencies.forEach(function (getDependency) {
        var dependency = getDependency();
        if (dependency === null) {
          return;
        }

        currentExportAll.add(dependency.path);
      });
      exportAll.set(file, currentExportAll);

      reexports.forEach(function (value, key) {
        if (key === DEFAULT) {
          exports.set(IMPORT_DEFAULT_SPECIFIER, { whereUsed: new Set() });
        } else {
          exports.set(key, { whereUsed: new Set() });
        }
        var reexport = value.getImport();
        if (!reexport) {
          return;
        }
        var localImport = imports.get(reexport.path);
        var currentValue = void 0;
        if (value.local === DEFAULT) {
          currentValue = IMPORT_DEFAULT_SPECIFIER;
        } else {
          currentValue = value.local;
        }
        if (typeof localImport !== 'undefined') {
          localImport = new Set([].concat(_toConsumableArray(localImport), [currentValue]));
        } else {
          localImport = new Set([currentValue]);
        }
        imports.set(reexport.path, localImport);
      });

      localImportList.forEach(function (value, key) {
        if (isNodeModule(key)) {
          return;
        }
        var localImport = imports.get(key) || new Set();
        value.declarations.forEach(function (_ref6) {var importedSpecifiers = _ref6.importedSpecifiers;
          importedSpecifiers.forEach(function (specifier) {
            localImport.add(specifier);
          });
        });
        imports.set(key, localImport);
      });
      importList.set(file, imports);

      // build up export list only, if file is not ignored
      if (ignoredFiles.has(file)) {
        return;
      }
      namespace.forEach(function (value, key) {
        if (key === DEFAULT) {
          exports.set(IMPORT_DEFAULT_SPECIFIER, { whereUsed: new Set() });
        } else {
          exports.set(key, { whereUsed: new Set() });
        }
      });
    }
    exports.set(EXPORT_ALL_DECLARATION, { whereUsed: new Set() });
    exports.set(IMPORT_NAMESPACE_SPECIFIER, { whereUsed: new Set() });
    exportList.set(file, exports);
  });
  exportAll.forEach(function (value, key) {
    value.forEach(function (val) {
      var currentExports = exportList.get(val);
      if (currentExports) {
        var currentExport = currentExports.get(EXPORT_ALL_DECLARATION);
        currentExport.whereUsed.add(key);
      }
    });
  });
};

/**
    * traverse through all imports and add the respective path to the whereUsed-list
    * of the corresponding export
    */
var determineUsage = function determineUsage() {
  importList.forEach(function (listValue, listKey) {
    listValue.forEach(function (value, key) {
      var exports = exportList.get(key);
      if (typeof exports !== 'undefined') {
        value.forEach(function (currentImport) {
          var specifier = void 0;
          if (currentImport === IMPORT_NAMESPACE_SPECIFIER) {
            specifier = IMPORT_NAMESPACE_SPECIFIER;
          } else if (currentImport === IMPORT_DEFAULT_SPECIFIER) {
            specifier = IMPORT_DEFAULT_SPECIFIER;
          } else {
            specifier = currentImport;
          }
          if (typeof specifier !== 'undefined') {
            var exportStatement = exports.get(specifier);
            if (typeof exportStatement !== 'undefined') {var
              whereUsed = exportStatement.whereUsed;
              whereUsed.add(listKey);
              exports.set(specifier, { whereUsed: whereUsed });
            }
          }
        });
      }
    });
  });
};

var getSrc = function getSrc(src) {
  if (src) {
    return src;
  }
  return [process.cwd()];
};

/**
    * prepare the lists of existing imports and exports - should only be executed once at
    * the start of a new eslint run
    */
var srcFiles = void 0;
var lastPrepareKey = void 0;
var doPreparation = function doPreparation(src, ignoreExports, context) {
  var prepareKey = JSON.stringify({
    src: (src || []).sort(),
    ignoreExports: (ignoreExports || []).sort(),
    extensions: Array.from((0, _ignore.getFileExtensions)(context.settings)).sort() });

  if (prepareKey === lastPrepareKey) {
    return;
  }

  importList.clear();
  exportList.clear();
  ignoredFiles.clear();
  filesOutsideSrc.clear();

  srcFiles = resolveFiles(getSrc(src), ignoreExports, context);
  prepareImportsAndExports(srcFiles, context);
  determineUsage();
  lastPrepareKey = prepareKey;
};

var newNamespaceImportExists = function newNamespaceImportExists(specifiers) {return specifiers.some(function (_ref7) {var type = _ref7.type;return type === IMPORT_NAMESPACE_SPECIFIER;});};

var newDefaultImportExists = function newDefaultImportExists(specifiers) {return specifiers.some(function (_ref8) {var type = _ref8.type;return type === IMPORT_DEFAULT_SPECIFIER;});};

var fileIsInPkg = function fileIsInPkg(file) {var _readPkgUp =
  (0, _readPkgUp3['default'])({ cwd: file }),path = _readPkgUp.path,pkg = _readPkgUp.pkg;
  var basePath = (0, _path.dirname)(path);

  var checkPkgFieldString = function checkPkgFieldString(pkgField) {
    if ((0, _path.join)(basePath, pkgField) === file) {
      return true;
    }
  };

  var checkPkgFieldObject = function checkPkgFieldObject(pkgField) {
    var pkgFieldFiles = (0, _arrayPrototype2['default'])((0, _object2['default'])(pkgField), function (value) {return typeof value === 'boolean' ? [] : (0, _path.join)(basePath, value);});

    if ((0, _arrayIncludes2['default'])(pkgFieldFiles, file)) {
      return true;
    }
  };

  var checkPkgField = function checkPkgField(pkgField) {
    if (typeof pkgField === 'string') {
      return checkPkgFieldString(pkgField);
    }

    if ((typeof pkgField === 'undefined' ? 'undefined' : _typeof(pkgField)) === 'object') {
      return checkPkgFieldObject(pkgField);
    }
  };

  if (pkg['private'] === true) {
    return false;
  }

  if (pkg.bin) {
    if (checkPkgField(pkg.bin)) {
      return true;
    }
  }

  if (pkg.browser) {
    if (checkPkgField(pkg.browser)) {
      return true;
    }
  }

  if (pkg.main) {
    if (checkPkgFieldString(pkg.main)) {
      return true;
    }
  }

  return false;
};

module.exports = {
  meta: {
    type: 'suggestion',
    docs: {
      category: 'Helpful warnings',
      description: 'Forbid modules without exports, or exports without matching import in another module.',
      url: (0, _docsUrl2['default'])('no-unused-modules') },

    schema: [{
      properties: {
        src: {
          description: 'files/paths to be analyzed (only for unused exports)',
          type: 'array',
          uniqueItems: true,
          items: {
            type: 'string',
            minLength: 1 } },


        ignoreExports: {
          description: 'files/paths for which unused exports will not be reported (e.g module entry points)',
          type: 'array',
          uniqueItems: true,
          items: {
            type: 'string',
            minLength: 1 } },


        missingExports: {
          description: 'report modules without any exports',
          type: 'boolean' },

        unusedExports: {
          description: 'report exports without any usage',
          type: 'boolean' } },


      anyOf: [
      {
        properties: {
          unusedExports: { 'enum': [true] },
          src: {
            minItems: 1 } },


        required: ['unusedExports'] },

      {
        properties: {
          missingExports: { 'enum': [true] } },

        required: ['missingExports'] }] }] },





  create: function () {function create(context) {var _ref9 =





      context.options[0] || {},src = _ref9.src,_ref9$ignoreExports = _ref9.ignoreExports,ignoreExports = _ref9$ignoreExports === undefined ? [] : _ref9$ignoreExports,missingExports = _ref9.missingExports,unusedExports = _ref9.unusedExports;

      if (unusedExports) {
        doPreparation(src, ignoreExports, context);
      }

      var file = context.getPhysicalFilename ? context.getPhysicalFilename() : context.getFilename();

      var checkExportPresence = function () {function checkExportPresence(node) {
          if (!missingExports) {
            return;
          }

          if (ignoredFiles.has(file)) {
            return;
          }

          var exportCount = exportList.get(file);
          var exportAll = exportCount.get(EXPORT_ALL_DECLARATION);
          var namespaceImports = exportCount.get(IMPORT_NAMESPACE_SPECIFIER);

          exportCount['delete'](EXPORT_ALL_DECLARATION);
          exportCount['delete'](IMPORT_NAMESPACE_SPECIFIER);
          if (exportCount.size < 1) {
            // node.body[0] === 'undefined' only happens, if everything is commented out in the file
            // being linted
            context.report(node.body[0] ? node.body[0] : node, 'No exports found');
          }
          exportCount.set(EXPORT_ALL_DECLARATION, exportAll);
          exportCount.set(IMPORT_NAMESPACE_SPECIFIER, namespaceImports);
        }return checkExportPresence;}();

      var checkUsage = function () {function checkUsage(node, exportedValue) {
          if (!unusedExports) {
            return;
          }

          if (ignoredFiles.has(file)) {
            return;
          }

          if (fileIsInPkg(file)) {
            return;
          }

          if (filesOutsideSrc.has(file)) {
            return;
          }

          // make sure file to be linted is included in source files
          if (!srcFiles.has(file)) {
            srcFiles = resolveFiles(getSrc(src), ignoreExports, context);
            if (!srcFiles.has(file)) {
              filesOutsideSrc.add(file);
              return;
            }
          }

          exports = exportList.get(file);

          // special case: export * from
          var exportAll = exports.get(EXPORT_ALL_DECLARATION);
          if (typeof exportAll !== 'undefined' && exportedValue !== IMPORT_DEFAULT_SPECIFIER) {
            if (exportAll.whereUsed.size > 0) {
              return;
            }
          }

          // special case: namespace import
          var namespaceImports = exports.get(IMPORT_NAMESPACE_SPECIFIER);
          if (typeof namespaceImports !== 'undefined') {
            if (namespaceImports.whereUsed.size > 0) {
              return;
            }
          }

          // exportsList will always map any imported value of 'default' to 'ImportDefaultSpecifier'
          var exportsKey = exportedValue === DEFAULT ? IMPORT_DEFAULT_SPECIFIER : exportedValue;

          var exportStatement = exports.get(exportsKey);

          var value = exportsKey === IMPORT_DEFAULT_SPECIFIER ? DEFAULT : exportsKey;

          if (typeof exportStatement !== 'undefined') {
            if (exportStatement.whereUsed.size < 1) {
              context.report(
              node, 'exported declaration \'' +
              value + '\' not used within other modules');

            }
          } else {
            context.report(
            node, 'exported declaration \'' +
            value + '\' not used within other modules');

          }
        }return checkUsage;}();

      /**
                                 * only useful for tools like vscode-eslint
                                 *
                                 * update lists of existing exports during runtime
                                 */
      var updateExportUsage = function () {function updateExportUsage(node) {
          if (ignoredFiles.has(file)) {
            return;
          }

          var exports = exportList.get(file);

          // new module has been created during runtime
          // include it in further processing
          if (typeof exports === 'undefined') {
            exports = new Map();
          }

          var newExports = new Map();
          var newExportIdentifiers = new Set();

          node.body.forEach(function (_ref10) {var type = _ref10.type,declaration = _ref10.declaration,specifiers = _ref10.specifiers;
            if (type === EXPORT_DEFAULT_DECLARATION) {
              newExportIdentifiers.add(IMPORT_DEFAULT_SPECIFIER);
            }
            if (type === EXPORT_NAMED_DECLARATION) {
              if (specifiers.length > 0) {
                specifiers.forEach(function (specifier) {
                  if (specifier.exported) {
                    newExportIdentifiers.add(specifier.exported.name || specifier.exported.value);
                  }
                });
              }
              forEachDeclarationIdentifier(declaration, function (name) {
                newExportIdentifiers.add(name);
              });
            }
          });

          // old exports exist within list of new exports identifiers: add to map of new exports
          exports.forEach(function (value, key) {
            if (newExportIdentifiers.has(key)) {
              newExports.set(key, value);
            }
          });

          // new export identifiers added: add to map of new exports
          newExportIdentifiers.forEach(function (key) {
            if (!exports.has(key)) {
              newExports.set(key, { whereUsed: new Set() });
            }
          });

          // preserve information about namespace imports
          var exportAll = exports.get(EXPORT_ALL_DECLARATION);
          var namespaceImports = exports.get(IMPORT_NAMESPACE_SPECIFIER);

          if (typeof namespaceImports === 'undefined') {
            namespaceImports = { whereUsed: new Set() };
          }

          newExports.set(EXPORT_ALL_DECLARATION, exportAll);
          newExports.set(IMPORT_NAMESPACE_SPECIFIER, namespaceImports);
          exportList.set(file, newExports);
        }return updateExportUsage;}();

      /**
                                        * only useful for tools like vscode-eslint
                                        *
                                        * update lists of existing imports during runtime
                                        */
      var updateImportUsage = function () {function updateImportUsage(node) {
          if (!unusedExports) {
            return;
          }

          var oldImportPaths = importList.get(file);
          if (typeof oldImportPaths === 'undefined') {
            oldImportPaths = new Map();
          }

          var oldNamespaceImports = new Set();
          var newNamespaceImports = new Set();

          var oldExportAll = new Set();
          var newExportAll = new Set();

          var oldDefaultImports = new Set();
          var newDefaultImports = new Set();

          var oldImports = new Map();
          var newImports = new Map();
          oldImportPaths.forEach(function (value, key) {
            if (value.has(EXPORT_ALL_DECLARATION)) {
              oldExportAll.add(key);
            }
            if (value.has(IMPORT_NAMESPACE_SPECIFIER)) {
              oldNamespaceImports.add(key);
            }
            if (value.has(IMPORT_DEFAULT_SPECIFIER)) {
              oldDefaultImports.add(key);
            }
            value.forEach(function (val) {
              if (
              val !== IMPORT_NAMESPACE_SPECIFIER &&
              val !== IMPORT_DEFAULT_SPECIFIER)
              {
                oldImports.set(val, key);
              }
            });
          });

          function processDynamicImport(source) {
            if (source.type !== 'Literal') {
              return null;
            }
            var p = (0, _resolve2['default'])(source.value, context);
            if (p == null) {
              return null;
            }
            newNamespaceImports.add(p);
          }

          (0, _visit2['default'])(node, visitorKeyMap.get(file), {
            ImportExpression: function () {function ImportExpression(child) {
                processDynamicImport(child.source);
              }return ImportExpression;}(),
            CallExpression: function () {function CallExpression(child) {
                if (child.callee.type === 'Import') {
                  processDynamicImport(child.arguments[0]);
                }
              }return CallExpression;}() });


          node.body.forEach(function (astNode) {
            var resolvedPath = void 0;

            // support for export { value } from 'module'
            if (astNode.type === EXPORT_NAMED_DECLARATION) {
              if (astNode.source) {
                resolvedPath = (0, _resolve2['default'])(astNode.source.raw.replace(/('|")/g, ''), context);
                astNode.specifiers.forEach(function (specifier) {
                  var name = specifier.local.name || specifier.local.value;
                  if (name === DEFAULT) {
                    newDefaultImports.add(resolvedPath);
                  } else {
                    newImports.set(name, resolvedPath);
                  }
                });
              }
            }

            if (astNode.type === EXPORT_ALL_DECLARATION) {
              resolvedPath = (0, _resolve2['default'])(astNode.source.raw.replace(/('|")/g, ''), context);
              newExportAll.add(resolvedPath);
            }

            if (astNode.type === IMPORT_DECLARATION) {
              resolvedPath = (0, _resolve2['default'])(astNode.source.raw.replace(/('|")/g, ''), context);
              if (!resolvedPath) {
                return;
              }

              if (isNodeModule(resolvedPath)) {
                return;
              }

              if (newNamespaceImportExists(astNode.specifiers)) {
                newNamespaceImports.add(resolvedPath);
              }

              if (newDefaultImportExists(astNode.specifiers)) {
                newDefaultImports.add(resolvedPath);
              }

              astNode.specifiers.
              filter(function (specifier) {return specifier.type !== IMPORT_DEFAULT_SPECIFIER && specifier.type !== IMPORT_NAMESPACE_SPECIFIER;}).
              forEach(function (specifier) {
                newImports.set(specifier.imported.name || specifier.imported.value, resolvedPath);
              });
            }
          });

          newExportAll.forEach(function (value) {
            if (!oldExportAll.has(value)) {
              var imports = oldImportPaths.get(value);
              if (typeof imports === 'undefined') {
                imports = new Set();
              }
              imports.add(EXPORT_ALL_DECLARATION);
              oldImportPaths.set(value, imports);

              var _exports = exportList.get(value);
              var currentExport = void 0;
              if (typeof _exports !== 'undefined') {
                currentExport = _exports.get(EXPORT_ALL_DECLARATION);
              } else {
                _exports = new Map();
                exportList.set(value, _exports);
              }

              if (typeof currentExport !== 'undefined') {
                currentExport.whereUsed.add(file);
              } else {
                var whereUsed = new Set();
                whereUsed.add(file);
                _exports.set(EXPORT_ALL_DECLARATION, { whereUsed: whereUsed });
              }
            }
          });

          oldExportAll.forEach(function (value) {
            if (!newExportAll.has(value)) {
              var imports = oldImportPaths.get(value);
              imports['delete'](EXPORT_ALL_DECLARATION);

              var _exports2 = exportList.get(value);
              if (typeof _exports2 !== 'undefined') {
                var currentExport = _exports2.get(EXPORT_ALL_DECLARATION);
                if (typeof currentExport !== 'undefined') {
                  currentExport.whereUsed['delete'](file);
                }
              }
            }
          });

          newDefaultImports.forEach(function (value) {
            if (!oldDefaultImports.has(value)) {
              var imports = oldImportPaths.get(value);
              if (typeof imports === 'undefined') {
                imports = new Set();
              }
              imports.add(IMPORT_DEFAULT_SPECIFIER);
              oldImportPaths.set(value, imports);

              var _exports3 = exportList.get(value);
              var currentExport = void 0;
              if (typeof _exports3 !== 'undefined') {
                currentExport = _exports3.get(IMPORT_DEFAULT_SPECIFIER);
              } else {
                _exports3 = new Map();
                exportList.set(value, _exports3);
              }

              if (typeof currentExport !== 'undefined') {
                currentExport.whereUsed.add(file);
              } else {
                var whereUsed = new Set();
                whereUsed.add(file);
                _exports3.set(IMPORT_DEFAULT_SPECIFIER, { whereUsed: whereUsed });
              }
            }
          });

          oldDefaultImports.forEach(function (value) {
            if (!newDefaultImports.has(value)) {
              var imports = oldImportPaths.get(value);
              imports['delete'](IMPORT_DEFAULT_SPECIFIER);

              var _exports4 = exportList.get(value);
              if (typeof _exports4 !== 'undefined') {
                var currentExport = _exports4.get(IMPORT_DEFAULT_SPECIFIER);
                if (typeof currentExport !== 'undefined') {
                  currentExport.whereUsed['delete'](file);
                }
              }
            }
          });

          newNamespaceImports.forEach(function (value) {
            if (!oldNamespaceImports.has(value)) {
              var imports = oldImportPaths.get(value);
              if (typeof imports === 'undefined') {
                imports = new Set();
              }
              imports.add(IMPORT_NAMESPACE_SPECIFIER);
              oldImportPaths.set(value, imports);

              var _exports5 = exportList.get(value);
              var currentExport = void 0;
              if (typeof _exports5 !== 'undefined') {
                currentExport = _exports5.get(IMPORT_NAMESPACE_SPECIFIER);
              } else {
                _exports5 = new Map();
                exportList.set(value, _exports5);
              }

              if (typeof currentExport !== 'undefined') {
                currentExport.whereUsed.add(file);
              } else {
                var whereUsed = new Set();
                whereUsed.add(file);
                _exports5.set(IMPORT_NAMESPACE_SPECIFIER, { whereUsed: whereUsed });
              }
            }
          });

          oldNamespaceImports.forEach(function (value) {
            if (!newNamespaceImports.has(value)) {
              var imports = oldImportPaths.get(value);
              imports['delete'](IMPORT_NAMESPACE_SPECIFIER);

              var _exports6 = exportList.get(value);
              if (typeof _exports6 !== 'undefined') {
                var currentExport = _exports6.get(IMPORT_NAMESPACE_SPECIFIER);
                if (typeof currentExport !== 'undefined') {
                  currentExport.whereUsed['delete'](file);
                }
              }
            }
          });

          newImports.forEach(function (value, key) {
            if (!oldImports.has(key)) {
              var imports = oldImportPaths.get(value);
              if (typeof imports === 'undefined') {
                imports = new Set();
              }
              imports.add(key);
              oldImportPaths.set(value, imports);

              var _exports7 = exportList.get(value);
              var currentExport = void 0;
              if (typeof _exports7 !== 'undefined') {
                currentExport = _exports7.get(key);
              } else {
                _exports7 = new Map();
                exportList.set(value, _exports7);
              }

              if (typeof currentExport !== 'undefined') {
                currentExport.whereUsed.add(file);
              } else {
                var whereUsed = new Set();
                whereUsed.add(file);
                _exports7.set(key, { whereUsed: whereUsed });
              }
            }
          });

          oldImports.forEach(function (value, key) {
            if (!newImports.has(key)) {
              var imports = oldImportPaths.get(value);
              imports['delete'](key);

              var _exports8 = exportList.get(value);
              if (typeof _exports8 !== 'undefined') {
                var currentExport = _exports8.get(key);
                if (typeof currentExport !== 'undefined') {
                  currentExport.whereUsed['delete'](file);
                }
              }
            }
          });
        }return updateImportUsage;}();

      return {
        'Program:exit': function () {function ProgramExit(node) {
            updateExportUsage(node);
            updateImportUsage(node);
            checkExportPresence(node);
          }return ProgramExit;}(),
        ExportDefaultDeclaration: function () {function ExportDefaultDeclaration(node) {
            checkUsage(node, IMPORT_DEFAULT_SPECIFIER);
          }return ExportDefaultDeclaration;}(),
        ExportNamedDeclaration: function () {function ExportNamedDeclaration(node) {
            node.specifiers.forEach(function (specifier) {
              checkUsage(specifier, specifier.exported.name || specifier.exported.value);
            });
            forEachDeclarationIdentifier(node.declaration, function (name) {
              checkUsage(node, name);
            });
          }return ExportNamedDeclaration;}() };

    }return create;}() };
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