unicorn/no-negation-in-equality-check Pedantic ​
What it does ​
Disallow negated expressions on the left of (in)equality checks.
Why is this bad? ​
A negated expression on the left of an (in)equality check is likely a mistake from trying to negate the whole condition.
Example ​
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)) {
}