eslint-plugin-sonarjs
Version:
SonarJS rules for ESLint
86 lines (85 loc) • 3.47 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
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, { hasSuggestions: true }, 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];
}