text: "use strict";
  /**
   * @license
   * Copyright 2013 Palantir Technologies, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  Object.defineProperty(exports, "__esModule", { value: true });
  var tslib_1 = require("tslib");
  var utils = require("tsutils");
  var ts = require("typescript");
  var Lint = require("../index");
  var OPTION_CHECK_PARAMETERS = "check-parameters";
  var Rule = /** @class */ (function (_super) {
      tslib_1.__extends(Rule, _super);
      function Rule() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      /* tslint:enable:object-literal-sort-keys */
      Rule.FAILURE_STRING = function (name) {
          return "Duplicate variable: '" + name + "'";
      };
      Rule.prototype.apply = function (sourceFile) {
          return this.applyWithWalker(new NoDuplicateVariableWalker(sourceFile, this.ruleName, {
              parameters: this.ruleArguments.indexOf(OPTION_CHECK_PARAMETERS) !== -1,
          }));
      };
      /* tslint:disable:object-literal-sort-keys */
      Rule.metadata = {
          ruleName: "no-duplicate-variable",
          description: "Disallows duplicate variable declarations in the same block scope.",
          descriptionDetails: (_a = ["\n            This rule is only useful when using the `var` keyword -\n            the compiler will detect redeclarations of `let` and `const` variables."], _a.raw = ["\n            This rule is only useful when using the \\`var\\` keyword -\n            the compiler will detect redeclarations of \\`let\\` and \\`const\\` variables."], Lint.Utils.dedent(_a)),
          rationale: (_b = ["\n            A variable can be reassigned if necessary -\n            there's no good reason to have a duplicate variable declaration."], _b.raw = ["\n            A variable can be reassigned if necessary -\n            there's no good reason to have a duplicate variable declaration."], Lint.Utils.dedent(_b)),
          optionsDescription: "You can specify `\"" + OPTION_CHECK_PARAMETERS + "\"` to check for variables with the same name as a paramter.",
          options: {
              type: "string",
              enum: [OPTION_CHECK_PARAMETERS],
          },
          optionExamples: [
              true,
              [true, OPTION_CHECK_PARAMETERS],
          ],
          type: "functionality",
          typescriptOnly: false,
      };
      return Rule;
  }(Lint.Rules.AbstractRule));
  exports.Rule = Rule;
  var NoDuplicateVariableWalker = /** @class */ (function (_super) {
      tslib_1.__extends(NoDuplicateVariableWalker, _super);
      function NoDuplicateVariableWalker() {
          return _super !== null && _super.apply(this, arguments) || this;
      }
      NoDuplicateVariableWalker.prototype.walk = function (sourceFile) {
          var _this = this;
          this.scope = new Set();
          var cb = function (node) {
              if (utils.isFunctionScopeBoundary(node)) {
                  var oldScope = _this.scope;
                  _this.scope = new Set();
                  ts.forEachChild(node, cb);
                  _this.scope = oldScope;
                  return;
              }
              if (_this.options.parameters && utils.isParameterDeclaration(node)) {
                  _this.handleBindingName(node.name, false);
              }
              else if (utils.isVariableDeclarationList(node) && !utils.isBlockScopedVariableDeclarationList(node)) {
                  for (var _i = 0, _a = node.declarations; _i < _a.length; _i++) {
                      var variable = _a[_i];
                      _this.handleBindingName(variable.name, true);
                  }
              }
              return ts.forEachChild(node, cb);
          };
          return ts.forEachChild(sourceFile, cb);
      };
      NoDuplicateVariableWalker.prototype.handleBindingName = function (name, check) {
          if (name.kind === ts.SyntaxKind.Identifier) {
              if (check && this.scope.has(name.text)) {
                  this.addFailureAtNode(name, Rule.FAILURE_STRING(name.text));
              }
              else {
                  this.scope.add(name.text);
              }
          }
          else {
              for (var _i = 0, _a = name.elements; _i < _a.length; _i++) {
                  var e = _a[_i];
                  if (e.kind !== ts.SyntaxKind.OmittedExpression) {
                      this.handleBindingName(e.name, check);
                  }
              }
          }
      };
      return NoDuplicateVariableWalker;
  }(Lint.AbstractWalker));
  var _a, _b;
  