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no-unused-disable

Disallow eslint-disable comments that do not suppress any diagnostics.

Targeted pattern scope​

This rule targets eslint-disable and related inline directive comments.

What this rule reports​

This rule reports disable directives that are not actually used to suppress any rule violations.

Why this rule exists​

Unused disables hide lint signal, create maintenance noise, and can mask future issues if copied forward.

❌ Incorrect​

/* eslint-disable no-alert */
const value = 1;

✅ Correct​

/* eslint-disable no-alert */
alert("x");

Behavior and migration notes​

This rule forwards options and behavior to @eslint-community/eslint-comments/no-unused-disable.

Additional examples​

/* eslint-disable no-console */
console.log("debug");
// ✅ valid: disable is used

/* eslint-disable no-console */
const value = 1;
// ❌ reported: disable directive is unused

ESLint flat config example​

import etcMisc from "eslint-plugin-etc-misc";

export default [
 {
  plugins: { "etc-misc": etcMisc },
  rules: {
   "etc-misc/no-unused-disable": "error",
  },
 },
];

When not to use it​

Disable this rule only during temporary migration windows where broad placeholder disables are explicitly managed.

Package documentation​

Rule catalog ID: R049

Further reading​

Adoption resources​

  • Start at warning level in CI, then move to error after cleanup.
  • Use focused codemods/autofix batches per package or directory.