--- /dev/null
+"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 tsutils_1 = require("tsutils");
+var ts = require("typescript");
+var Lint = require("../index");
+var OPTION_ALLOW_NULL_CHECK = "allow-null-check";
+var OPTION_ALLOW_UNDEFINED_CHECK = "allow-undefined-check";
+var Rule = /** @class */ (function (_super) {
+ tslib_1.__extends(Rule, _super);
+ function Rule() {
+ return _super !== null && _super.apply(this, arguments) || this;
+ }
+ Rule.prototype.apply = function (sourceFile) {
+ return this.applyWithFunction(sourceFile, walk, {
+ allowNull: this.ruleArguments.indexOf(OPTION_ALLOW_NULL_CHECK) !== -1,
+ allowUndefined: this.ruleArguments.indexOf(OPTION_ALLOW_UNDEFINED_CHECK) !== -1,
+ });
+ };
+ /* tslint:disable:object-literal-sort-keys */
+ Rule.metadata = {
+ ruleName: "triple-equals",
+ description: "Requires `===` and `!==` in place of `==` and `!=`.",
+ optionsDescription: Lint.Utils.dedent(templateObject_1 || (templateObject_1 = tslib_1.__makeTemplateObject(["\n Two arguments may be optionally provided:\n\n * `\"allow-null-check\"` allows `==` and `!=` when comparing to `null`.\n * `\"allow-undefined-check\"` allows `==` and `!=` when comparing to `undefined`."], ["\n Two arguments may be optionally provided:\n\n * \\`\"allow-null-check\"\\` allows \\`==\\` and \\`!=\\` when comparing to \\`null\\`.\n * \\`\"allow-undefined-check\"\\` allows \\`==\\` and \\`!=\\` when comparing to \\`undefined\\`."]))),
+ options: {
+ type: "array",
+ items: {
+ type: "string",
+ enum: [OPTION_ALLOW_NULL_CHECK, OPTION_ALLOW_UNDEFINED_CHECK],
+ },
+ minLength: 0,
+ maxLength: 2,
+ },
+ optionExamples: [true, [true, "allow-null-check"], [true, "allow-undefined-check"]],
+ type: "functionality",
+ typescriptOnly: false,
+ };
+ /* tslint:enable:object-literal-sort-keys */
+ Rule.EQ_FAILURE_STRING = "== should be ===";
+ Rule.NEQ_FAILURE_STRING = "!= should be !==";
+ return Rule;
+}(Lint.Rules.AbstractRule));
+exports.Rule = Rule;
+function walk(ctx) {
+ return ts.forEachChild(ctx.sourceFile, function cb(node) {
+ if (tsutils_1.isBinaryExpression(node)) {
+ if ((node.operatorToken.kind === ts.SyntaxKind.EqualsEqualsToken ||
+ node.operatorToken.kind === ts.SyntaxKind.ExclamationEqualsToken) &&
+ !(isExpressionAllowed(node.right, ctx.options) ||
+ isExpressionAllowed(node.left, ctx.options))) {
+ ctx.addFailureAtNode(node.operatorToken, node.operatorToken.kind === ts.SyntaxKind.EqualsEqualsToken
+ ? Rule.EQ_FAILURE_STRING
+ : Rule.NEQ_FAILURE_STRING);
+ }
+ }
+ return ts.forEachChild(node, cb);
+ });
+}
+function isExpressionAllowed(node, options) {
+ if (node.kind === ts.SyntaxKind.NullKeyword) {
+ return options.allowNull;
+ }
+ return (options.allowUndefined &&
+ node.kind === ts.SyntaxKind.Identifier &&
+ node.originalKeywordKind === ts.SyntaxKind.UndefinedKeyword);
+}
+var templateObject_1;