eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
64 lines (63 loc) • 2.18 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/S3358/javascript
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const helpers_1 = require("../helpers");
const meta_1 = require("./meta");
exports.rule = {
meta: (0, helpers_1.generateMeta)(meta_1.meta, {
messages: {
extractTernary: 'Extract this nested ternary operation into an independent statement.',
},
}),
create(context) {
return {
'ConditionalExpression ConditionalExpression': (node) => {
if (!isNestingBroken(context.sourceCode.getAncestors(node))) {
context.report({
messageId: 'extractTernary',
node,
});
}
},
};
},
};
function isNestingBroken(ancestors) {
let parent = ancestors.pop();
while (parent.type !== 'ConditionalExpression') {
if (breaksNesting(parent)) {
return true;
}
parent = ancestors.pop();
}
return false;
}
function breaksNesting(node) {
return [
'ArrayExpression',
'ObjectExpression',
'FunctionExpression',
'ArrowFunctionExpression',
'JSXExpressionContainer',
].includes(node.type);
}