eslint-plugin-sonarjs/cjs/S1848/rule.js

SonarJS rules for ESLint

"use strict";
/*
 * 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/S1848/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");
exports.rule = {
    meta: (0, index_js_1.generateMeta)(meta_js_1.meta, {
        messages: {
            removeInstantiationOf: 'Either remove this useless object instantiation of "{{constructor}}" or use it.',
            removeInstantiation: 'Either remove this useless object instantiation or use it.',
        },
    }),
    create(context) {
        const sourceCode = context.sourceCode;
        return {
            'ExpressionStatement > NewExpression': (node) => {
                if (context.settings['fileType'] === 'TEST' || isTryable(node, context)) {
                    return;
                }
                const { callee } = node;
                if (callee.type === 'Identifier' || callee.type === 'MemberExpression') {
                    const calleeText = sourceCode.getText(callee);
                    if (isException(context, callee, calleeText)) {
                        return;
                    }
                    const reportLocation = {
                        start: node.loc.start,
                        end: callee.loc.end,
                    };
                    reportIssue(reportLocation, `${calleeText}`, 'removeInstantiationOf', context);
                }
                else {
                    const newToken = sourceCode.getFirstToken(node);
                    reportIssue(newToken.loc, '', 'removeInstantiation', context);
                }
            },
        };
    },
};
function isTryable(node, context) {
    const ancestors = context.sourceCode.getAncestors(node);
    let parent = undefined;
    let child = node;
    while ((parent = ancestors.pop()) !== undefined) {
        if (parent.type === 'TryStatement' && parent.block === child) {
            return true;
        }
        child = parent;
    }
    return false;
}
function reportIssue(loc, objectText, messageId, context) {
    context.report({
        messageId,
        data: {
            constructor: objectText,
        },
        loc,
    });
}
/**
 * These exceptions are based on community requests and Peach
 */
function isException(context, node, name) {
    if (name === 'Notification') {
        return true;
    }
    const fqn = (0, index_js_1.getFullyQualifiedName)(context, node);
    return fqn === 'vue' || fqn === '@ag-grid-community.core.Grid' || fqn?.startsWith('aws-cdk-lib');
}