eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
58 lines • 2.31 kB
JavaScript
;
/*
* eslint-plugin-sonarjs
* Copyright (C) 2018 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://jira.sonarsource.com/browse/RSPEC-1264
const rule = {
meta: {
fixable: "code",
type: "suggestion",
},
create(context) {
return {
ForStatement(node) {
const forLoop = node;
const forKeyword = context.getSourceCode().getFirstToken(node);
if (!forLoop.init && !forLoop.update && forKeyword) {
context.report({
message: `Replace this "for" loop with a "while" loop.`,
loc: forKeyword.loc,
fix: getFix(forLoop),
});
}
},
};
function getFix(forLoop) {
const forLoopRange = forLoop.range;
const closingParenthesisToken = context.getSourceCode().getTokenBefore(forLoop.body);
const condition = forLoop.test;
if (condition && forLoopRange && closingParenthesisToken) {
return (fixer) => {
const start = forLoopRange[0];
const end = closingParenthesisToken.range[1];
const conditionText = context.getSourceCode().getText(condition);
return fixer.replaceTextRange([start, end], `while (${conditionText})`);
};
}
return undefined;
}
},
};
module.exports = rule;
//# sourceMappingURL=prefer-while.js.map