eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
59 lines (58 loc) • 2.53 kB
JavaScript
;
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2024 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
// https://sonarsource.github.io/rspec/#/rspec/S1066
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const helpers_1 = require("../helpers");
const utils_1 = require("@typescript-eslint/utils");
const meta_1 = require("./meta");
const message = 'Merge this if statement with the nested one.';
exports.rule = {
meta: (0, helpers_1.generateMeta)(meta_1.meta, {
messages: {
mergeNestedIfStatement: message,
},
}, true),
create(context) {
return {
IfStatement(node) {
let { consequent } = node;
if (consequent.type === utils_1.AST_NODE_TYPES.BlockStatement && consequent.body.length === 1) {
consequent = consequent.body[0];
}
if (isIfStatementWithoutElse(node) && isIfStatementWithoutElse(consequent)) {
const ifKeyword = context.sourceCode.getFirstToken(consequent);
const enclosingIfKeyword = context.sourceCode.getFirstToken(node);
if (ifKeyword && enclosingIfKeyword) {
(0, helpers_1.report)(context, {
messageId: 'mergeNestedIfStatement',
message,
loc: enclosingIfKeyword.loc,
}, [(0, helpers_1.toSecondaryLocation)(ifKeyword, 'Nested "if" statement.')]);
}
}
},
};
function isIfStatementWithoutElse(node) {
return node.type === utils_1.AST_NODE_TYPES.IfStatement && !node.alternate;
}
},
};