eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
66 lines (65 loc) • 2.36 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/S881/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: {
extractOperation: 'Extract this {{incrementType}} operation into a dedicated statement.',
},
}),
create(context) {
function reportUpdateExpression(node) {
context.report({
messageId: 'extractOperation',
data: {
incrementType: node.operator === '++' ? 'increment' : 'decrement',
},
node,
});
}
return {
UpdateExpression(node) {
if (!isIgnored(node, context.sourceCode.getAncestors(node))) {
reportUpdateExpression(node);
}
},
};
},
};
function isIgnored(node, ancestors) {
const firstAncestor = ancestors.pop();
if (firstAncestor) {
switch (firstAncestor.type) {
case 'ExpressionStatement':
return true;
case 'ForStatement':
return firstAncestor.update === node;
case 'SequenceExpression': {
const secondAncestor = ancestors.pop();
return (secondAncestor !== undefined &&
secondAncestor.type === 'ForStatement' &&
secondAncestor.update === firstAncestor);
}
}
}
return false;
}