eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
66 lines (65 loc) • 2.56 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/S1535/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: {
restrictLoop: 'Restrict what this loop acts on by testing each property.',
},
}),
create(context) {
function isAttrCopy(statement) {
if (statement.type !== 'ExpressionStatement') {
return false;
}
const expression = statement.expression;
return (expression.type === 'AssignmentExpression' &&
expression.left.type === 'MemberExpression' &&
expression.left.computed);
}
return {
ForInStatement(node) {
const forInStatement = node;
const body = forInStatement.body;
if (body.type === 'BlockStatement') {
if (body.body.length === 0) {
return;
}
const firstStatement = body.body[0];
if (firstStatement.type === 'IfStatement' || isAttrCopy(firstStatement)) {
return;
}
}
if (body.type === 'EmptyStatement' || body.type === 'IfStatement' || isAttrCopy(body)) {
return;
}
context.report({
node: forInStatement,
messageId: 'restrictLoop',
});
},
};
},
};