eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
61 lines (60 loc) • 2.04 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/S3358/javascript
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");
exports.rule = {
meta: (0, index_js_1.generateMeta)(meta_js_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);
}