Function createModifyingMethodHandler

packages/db/src/proxy.ts:235–245

* Creates a wrapper for methods that modify a collection (array, Map, Set). * The wrapper calls the method and marks the change tracker as modified.

(
  methodFn: (...args: Array<unknown>) => unknown,
  changeTracker: ChangeTracker<T>,
  markChanged: (tracker: ChangeTracker<T>) => void,
)

 * The wrapper calls the method and marks the change tracker as modified.
 */
function createModifyingMethodHandler<T extends object>(
  methodFn: (...args: Array<unknown>) => unknown,
  changeTracker: ChangeTracker<T>,
  markChanged: (tracker: ChangeTracker<T>) => void,
): (...args: Array<unknown>) => unknown {
  return function (...args: Array<unknown>) {
    const result = methodFn.apply(changeTracker.copy_, args)
    markChanged(changeTracker)
    return result
  }
}

/**
 * Creates handlers for Map/Set iterator methods (entries, keys, values, forEach).