eslint/no-useless-concat Suspicious

🚧 An auto-fix is planned for this rule, but not implemented at this time.

Disallow unnecessary concatenation of literals or template literals.

It’s unnecessary to concatenate two strings together when they could be combined into a single literal.

Examples of incorrect code for this rule:

javascript

var foo = "a" + "b";

javascript

var foo = "a" + "b" + "c";

Examples of correct code for this rule:

javascript

var foo = "a" + bar;

// When the string concatenation is multiline
var foo = "a" + "b" + "c";

How to use

To enable this rule using the config file or in the CLI, you can use:

Config (.oxlintrc.json)Config (oxlint.config.ts)CLI

json

{
  "rules": {
    "no-useless-concat": "error"
  }
}

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "no-useless-concat": "error",
  },
});

bash

oxlint --deny no-useless-concat

This rule was added in v0.4.2.