eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
53 lines (52 loc) • 2.01 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/S2737
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: {
uselessCatch: 'Add logic to this catch clause or eliminate it and rethrow the exception automatically.',
},
}),
create(context) {
return {
CatchClause: (node) => visitCatchClause(node, context),
};
},
};
function visitCatchClause(catchClause, context) {
const statements = catchClause.body.body;
if (catchClause.param &&
statements.length === 1 &&
onlyRethrows(statements[0], catchClause.param, context.sourceCode)) {
const catchKeyword = context.sourceCode.getFirstToken(catchClause);
context.report({
messageId: 'uselessCatch',
loc: catchKeyword.loc,
});
}
}
function onlyRethrows(statement, catchParam, sourceCode) {
return ((0, index_js_1.isThrowStatement)(statement) &&
catchParam !== null &&
statement.argument !== null &&
(0, index_js_1.areEquivalent)(catchParam, statement.argument, sourceCode));
}