eslint/no-const-assign Correctness

✅ This rule is turned on by default.

Disallow reassigning const variables.

We cannot modify variables that are declared using the const keyword, as it will raise a runtime error.

Note that this rule is not necessary for TypeScript code, as TypeScript will already catch this as an error.

Examples of incorrect code for this rule:

const a = 0;
a = 1;

const b = 0;
b += 1;

Examples of correct code for this rule:

const a = 0;
console.log(a);

var b = 0;
b += 1;

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-const-assign": "error"
  }
}

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "no-const-assign": "error",
  },
});

bash

oxlint --deny no-const-assign

This rule was added in v0.0.3.