eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
55 lines (54 loc) • 2.3 kB
JavaScript
;
/*
* SonarQube JavaScript Plugin
* Copyright (C) 2011-2025 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 Sonar Source-Available License Version 1, as published by SonarSource SA.
*
* 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 Sonar Source-Available License for more details.
*
* You should have received a copy of the Sonar Source-Available License
* along with this program; if not, see https://sonarsource.com/license/ssal/
*/
// https://sonarsource.github.io/rspec/#/rspec/S1066
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const index_js_1 = require("../helpers/index.js");
const meta_js_1 = require("./meta.js");
const message = 'Merge this if statement with the nested one.';
exports.rule = {
meta: (0, index_js_1.generateMeta)(meta_js_1.meta, {
messages: {
mergeNestedIfStatement: message,
},
}, true),
create(context) {
return {
IfStatement(node) {
let { consequent } = node;
if (consequent.type === '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, index_js_1.report)(context, {
messageId: 'mergeNestedIfStatement',
message,
loc: enclosingIfKeyword.loc,
}, [(0, index_js_1.toSecondaryLocation)(ifKeyword, 'Nested "if" statement.')]);
}
}
},
};
function isIfStatementWithoutElse(node) {
return node.type === 'IfStatement' && !node.alternate;
}
},
};