eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
68 lines (67 loc) • 3.05 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/S3525/javascript
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const typescript_1 = __importDefault(require("typescript"));
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: {
declareClass: 'Declare a "{{class}}" class and move this declaration of "{{declaration}}" into it.',
},
}),
create(context) {
const services = context.sourceCode.parserServices;
const isFunction = (0, index_js_1.isRequiredParserServices)(services) ? isFunctionType : isFunctionLike;
return {
AssignmentExpression: (node) => {
const { left, right } = node;
if (left.type === 'MemberExpression' && isFunction(right, services)) {
const [member, prototype] = [left.object, left.property];
if (member.type === 'MemberExpression' && prototype.type === 'Identifier') {
const [klass, property] = [member.object, member.property];
if (klass.type === 'Identifier' &&
property.type === 'Identifier' &&
property.name === 'prototype') {
context.report({
messageId: 'declareClass',
data: {
class: klass.name,
declaration: prototype.name,
},
node: left,
});
}
}
}
},
};
},
};
function isFunctionType(node, services) {
const type = (0, index_js_1.getTypeFromTreeNode)(node, services);
return type.symbol && (type.symbol.flags & typescript_1.default.SymbolFlags.Function) !== 0;
}
function isFunctionLike(node, _services) {
return ['FunctionDeclaration', 'FunctionExpression', 'ArrowFunctionExpression'].includes(node.type);
}