no-path-concat.js
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/**
* @fileoverview Disallow string concatenation when using __dirname and __filename
* @author Nicholas C. Zakas
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
type: "suggestion",
docs: {
description: "disallow string concatenation with `__dirname` and `__filename`",
category: "Node.js and CommonJS",
recommended: false,
url: "https://eslint.org/docs/rules/no-path-concat"
},
schema: []
},
create(context) {
const MATCHER = /^__(?:dir|file)name$/u;
//--------------------------------------------------------------------------
// Public
//--------------------------------------------------------------------------
return {
BinaryExpression(node) {
const left = node.left,
right = node.right;
if (node.operator === "+" &&
((left.type === "Identifier" && MATCHER.test(left.name)) ||
(right.type === "Identifier" && MATCHER.test(right.name)))
) {
context.report({ node, message: "Use path.join() or path.resolve() instead of + to create paths." });
}
}
};
}
};