Disallow Null Comparisons (no-eq-null)

Disallow Null Comparisons (no-eq-null)

Comparing to null without a type-checking operator (== or !=), can have unintended results as the comparison will evaluate to true when comparing to not just a null, but also an undefined value.

if (foo == null) {
  bar();
}

while (qux != null) {
  baz();
}

Examples of correct code for this rule:

if (foo === null) {
  bar();
}

while (qux !== null) {
  baz();
}