Function merge

src-tauri/database/src/database.rs:1309–1325

(a: &mut Value, b: Value)

#[tracing::instrument(level = "debug", skip())]
fn merge(a: &mut Value, b: Value) {
    if let Value::Object(a) = a {
        if let Value::Object(b) = b {
            for (k, v) in b {
                if v.is_null() {
                    a.remove(&k);
                } else {
                    merge(a.entry(k).or_insert(Value::Null), v);
                }
            }

            return;
        }
    }

    *a = b;
}