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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import Foundation
public extension Prefs {
/// Runs `reset` when `environment` differs from the value last recorded under `lastUsedKey`, so
/// callers can discard credentials tied to one backend.
func resetIfEnvironmentChanged(_ environment: String, forKey lastUsedKey: String, reset: () -> Void) {
if let lastUsed = stringForKey(lastUsedKey), lastUsed != environment {
reset()
}
setString(environment, forKey: lastUsedKey)
}
}