eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
101 lines (100 loc) • 4.02 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/S6439/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");
const detectReactNativeSelector = [
':matches(',
[
'CallExpression[callee.name="require"][arguments.0.value="react-native"]',
'ImportDeclaration[source.value="react-native"]',
].join(','),
')',
].join('');
exports.rule = {
meta: (0, index_js_1.generateMeta)(meta_js_1.meta, {
hasSuggestions: true,
messages: {
nonBooleanMightRender: 'Convert the conditional to a boolean to avoid leaked value',
suggestConversion: 'Convert the conditional to a boolean',
},
}),
create(context) {
if (!(0, index_js_1.isRequiredParserServices)(context.sourceCode.parserServices)) {
return {};
}
let usesReactNative = false;
return {
[detectReactNativeSelector]() {
usesReactNative = true;
},
'JSXExpressionContainer > LogicalExpression[operator="&&"]'(node) {
const leftSide = node.left;
checkNonBoolean(context, usesReactNative ? isStringOrNumber : isNumber, leftSide);
},
};
},
};
function report(node, context) {
context.report({
messageId: 'nonBooleanMightRender',
node,
suggest: [
{
messageId: 'suggestConversion',
fix: fixer => {
const sourceCode = context.sourceCode;
const previousToken = sourceCode.getTokenBefore(node);
const nextToken = sourceCode.getTokenAfter(node);
const fixes = [];
if (!!previousToken &&
!!nextToken &&
node.range !== undefined &&
previousToken.value === '(' &&
previousToken.range[1] <= node.range[0] &&
nextToken.value === ')' &&
nextToken.range[0] >= node.range[1]) {
fixes.push(fixer.remove(previousToken));
fixes.push(fixer.remove(nextToken));
}
fixes.push(fixer.replaceText(node, `!!(${sourceCode.getText(node)})`));
return fixes;
},
},
],
});
}
function isStringOrNumber(node, context) {
const type = (0, index_js_1.getTypeFromTreeNode)(node, context.sourceCode.parserServices);
return (0, index_js_1.isStringType)(type) || (0, index_js_1.isBigIntType)(type) || (0, index_js_1.isNumberType)(type);
}
function isNumber(node, context) {
const type = (0, index_js_1.getTypeFromTreeNode)(node, context.sourceCode.parserServices);
return (0, index_js_1.isBigIntType)(type) || (0, index_js_1.isNumberType)(type);
}
function checkNonBoolean(context, isLeakingType, node) {
if (node.type === 'LogicalExpression') {
checkNonBoolean(context, isLeakingType, node.left);
checkNonBoolean(context, isLeakingType, node.right);
}
else if (isLeakingType(node, context)) {
report(node, context);
}
}