eslint-plugin-sonarjs
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JavaScript
;
/*
* SonarQube JavaScript Plugin
* Copyright (C) SonarSource Sàrl
* mailto:info AT sonarsource DOT com
*
* You can redistribute and/or modify this program under the terms of
* the Sonar Source-Available License Version 1, as published by SonarSource Sàrl.
*
* 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/S5863/javascript
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.rule = void 0;
const equivalence_js_1 = require("../helpers/equivalence.js");
const chai_js_1 = require("../helpers/chai.js");
const generate_meta_js_1 = require("../helpers/generate-meta.js");
const ast_js_1 = require("../helpers/ast.js");
const location_js_1 = require("../helpers/location.js");
const meta = __importStar(require("./generated-meta.js"));
exports.rule = {
meta: (0, generate_meta_js_1.generateMeta)(meta),
create(context) {
if (!(0, chai_js_1.isImported)(context)) {
return {};
}
return {
ExpressionStatement(node) {
const { expression } = node;
checkExpect(context, expression);
checkShould(context, expression);
checkAssert(context, expression);
},
};
},
};
function checkAssert(context, expression) {
if (expression.type === 'CallExpression') {
const { callee, arguments: args } = expression;
if (callee.type === 'MemberExpression' && (0, ast_js_1.isIdentifier)(callee.object, 'assert')) {
findDuplicates(context, args);
}
}
}
function checkExpect(context, expression) {
let currentExpression = expression;
let args = [];
while (true) {
if (currentExpression.type === 'CallExpression') {
args = [...currentExpression.arguments, ...args];
currentExpression = currentExpression.callee;
}
else if (currentExpression.type === 'MemberExpression') {
currentExpression = currentExpression.object;
}
else if ((0, ast_js_1.isIdentifier)(currentExpression, 'expect')) {
break;
}
else {
return;
}
}
findDuplicates(context, args);
}
function checkShould(context, expression) {
let currentExpression = expression;
let args = [];
let hasShould = false;
while (true) {
if (currentExpression.type === 'CallExpression') {
args = [...currentExpression.arguments, ...args];
currentExpression = currentExpression.callee;
}
else if (currentExpression.type === 'MemberExpression') {
if ((0, ast_js_1.isIdentifier)(currentExpression.property, 'should')) {
hasShould = true;
}
currentExpression = currentExpression.object;
}
else if ((0, ast_js_1.isIdentifier)(currentExpression, 'should')) {
break;
}
else if (hasShould) {
args = [currentExpression, ...args];
break;
}
else {
return;
}
}
findDuplicates(context, args);
}
function findDuplicates(context, args) {
for (let i = 0; i < args.length; i++) {
for (let j = i + 1; j < args.length; j++) {
const duplicates = (0, equivalence_js_1.areEquivalent)(args[i], args[j], context.sourceCode);
if (duplicates && !(0, ast_js_1.isLiteral)(args[i])) {
(0, location_js_1.report)(context, { message: `Replace this argument or its duplicate.`, node: args[i] }, [
(0, location_js_1.toSecondaryLocation)(args[j]),
]);
}
}
}
}