no-return-assign

Disallow assignment within an explicit or implicit return value

A returned assignment makes the assigned value the function result after mutating its target, and a single = can be mistaken for an equality operator.
Instead, you SHOULD perform the assignment as a statement and return the resulting value separately.

- Category: suspicious
- Level: warning
- Fix: none
- Scope: module

Reported

function reset(value: int32): int32 {
    let current = value;
    return (current = 0);
}
Accepted

function reset(value: int32): int32 {
    let current = value;
    current = 0;
    return current;
}
Prior art

- ESLint · no-return-assign

language/linter/src/rules/suspicious/noreturnassign.rs:6