no-path-concat

A path built with + has the separator written into the string. __dirname + "/config.json" mixes \ and / on Windows, and a forgotten slash gives you the wrong path without an error. path.join() and path.resolve() put in the right separator and clean up .. and doubled slashes.

ESLint has deprecated this rule. Use n/no-path-concat instead.

Examples

Reported:

const configPath = __dirname + "/config.json";

Not reported:

const path = require("node:path");

const configPath = path.join(__dirname, "config.json");

Only + is checked. A template literal has the same problem, but it isn't reported:

const configPath = `${__dirname}/config.json`;