eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
70 lines (69 loc) • 2.74 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/S2688/javascript
Object.defineProperty(exports, "__esModule", { value: true });
exports.decorate = void 0;
const helpers_1 = require("../helpers");
const meta_1 = require("./meta");
// core implementation of this rule does not provide quick fixes
function decorate(rule) {
return (0, helpers_1.interceptReport)({
...rule,
meta: (0, helpers_1.generateMeta)(meta_1.meta, {
...rule.meta,
hasSuggestions: true,
}),
}, (context, reportDescriptor) => {
const suggest = [];
const node = reportDescriptor.node;
if (node.type === 'BinaryExpression') {
const { left, operator, right } = node;
let negate = null;
switch (operator) {
case '!=':
case '!==':
negate = true;
break;
case '==':
case '===':
negate = false;
break;
}
if (negate !== null) {
const arg = isNaNIdentifier(left) ? right : left;
const argText = context.sourceCode.getText(arg);
const prefix = negate ? '!' : '';
suggest.push({
desc: 'Use "isNaN()"',
fix: fixer => fixer.replaceText(node, `${prefix}isNaN(${argText})`),
}, {
desc: 'Use "Number.isNaN()"',
fix: fixer => fixer.replaceText(node, `${prefix}Number.isNaN(${argText})`),
});
}
}
context.report({ ...reportDescriptor, suggest });
});
}
exports.decorate = decorate;
function isNaNIdentifier(node) {
return (0, helpers_1.isIdentifier)(node, 'NaN') || (0, helpers_1.isMemberExpression)(node, 'Number', 'NaN');
}