eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
119 lines (118 loc) • 4.83 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/S4621/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 index_js_1 = require("../helpers/index.js");
const meta = __importStar(require("./generated-meta.js"));
exports.rule = {
meta: (0, index_js_1.generateMeta)(meta, { hasSuggestions: true }),
create(context) {
return {
'TSUnionType, TSIntersectionType'(node) {
const sourceCode = context.sourceCode;
const compositeType = node;
const groupedTypes = new Map();
compositeType.types.forEach(typescriptType => {
const nodeValue = sourceCode.getText(typescriptType);
const nodesWithGivenType = groupedTypes.get(nodeValue);
const nodeType = typescriptType;
if (!nodesWithGivenType) {
groupedTypes.set(nodeValue, [nodeType]);
}
else {
nodesWithGivenType.push(nodeType);
}
});
groupedTypes.forEach(duplicates => {
if (duplicates.length > 1) {
const suggest = getSuggestions(compositeType, duplicates, context);
const primaryNode = duplicates.splice(1, 1)[0];
const secondaryLocations = duplicates.map((node, index) => (0, index_js_1.toSecondaryLocation)(node, index ? 'Another duplicate' : 'Original'));
(0, index_js_1.report)(context, {
message: `Remove this duplicated type or replace with another one.`,
loc: primaryNode.loc,
suggest,
}, secondaryLocations);
}
});
},
};
},
};
function getSuggestions(composite, duplicates, context) {
const ranges = duplicates.slice(1).map(duplicate => {
const idx = composite.types.indexOf(duplicate);
return [
getEnd(context, composite.types[idx - 1], composite),
getEnd(context, duplicate, composite),
];
});
return [
{
desc: 'Remove duplicate types',
fix: fixer => ranges.map(r => fixer.removeRange(r)),
},
];
}
function getEnd(context, node, composite) {
let end = node;
while (true) {
const nextToken = context.sourceCode.getTokenAfter(end);
if (nextToken && nextToken.value === ')' && nextToken.range[1] <= composite.range[1]) {
end = nextToken;
}
else {
break;
}
}
return end.range[1];
}