Function calculateSessionSuccessRate

frontend/src/utils/stats.ts:14–19

(
  session: PracticeSessionStats | null,
)

}

export const calculateSessionSuccessRate = (
  session: PracticeSessionStats | null,
): number | null => {
  if (!session || session.cards_practiced === 0) return null
  return Math.round((session.correct_answers / session.cards_practiced) * 100)
}

export function calculateLearningTrend(
  sessions: PracticeSessionStats[] | undefined,