no-collapsible-if

Prefer one condition over nested if statements without alternatives

Nested if statements without else branches require both conditions before running the same body.
Instead, you SHOULD join the conditions with && in one if statement.

- Category: style
- Level: warning
- Fix: suggestion
- Scope: module

Reported

declare function run(): void;

function runWhen(ready: boolean, enabled: boolean): void {
    if (ready) {
        if (enabled) {
            run();
        }
    }
}
Accepted

declare function run(): void;

function runWhen(ready: boolean, enabled: boolean): void {
    if (ready && enabled) {
        run();
    }
}
Prior art

- Clippy · collapsibleif

language/linter/src/rules/style/nocollapsibleif.rs:8