eslint/no-cond-assign Correctness ​
What it does ​
Disallow assignment operators in conditional expressions
Why is this bad? ​
In conditional statements, it is very easy to mistype a comparison operator (such as ==) as an assignment operator (such as =).
There are valid reasons to use assignment operators in conditional statements. However, it can be difficult to tell whether a specific assignment was intentional.
Example ​
js
// Check the user's job title
if ((user.jobTitle = "manager")) {
// user.jobTitle is now incorrect
}