eslint/no-extra-boolean-cast Correctness
What it does
This rule disallows unnecessary boolean casts.
Why is this bad?
In contexts such as an if statement’s test where the result of the expression will already be coerced to a Boolean, casting to a Boolean via double negation (!!) or a Boolean call is unnecessary.
Example
javascript
var foo = !!!bar;
var foo = Boolean(!!bar);
if (!!foo) {
}
if (Boolean(foo)) {
}
// with "enforceForLogicalOperands" option enabled
if (!!foo || bar) {
}