unicorn/no-negation-in-equality-check Pedantic

🚧 An auto-fix is still under development.

Disallow negated expressions on the left of (in)equality checks.

A negated expression on the left of an (in)equality check is likely a mistake from trying to negate the whole condition.

Examples of incorrect code for this rule:

javascript

if (!foo === bar) {}

if (!foo !== bar) {}

Examples of correct code for this rule:

javascript

if (foo !== bar) {}

if (!(foo === bar)) {}

How to use

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

CLIConfig (.oxlintrc.json)

bash

oxlint --deny unicorn/no-negation-in-equality-check

json

{
  "rules": {
    "unicorn/no-negation-in-equality-check": "error"
  }
}