HH\invariant_callback_register

Pass a function that will be called if any invariant fails

namespace HH;

function invariant_callback_register(
  (function(string, mixed ...): void) $callback,
): void;

The callback will be called with all the invariant parameters after the condition.

Parameters

(function(string, mixed ...): void) $callback - The function that will be called if your invariant fails.