forked from git.gladyson/openmonetis
8de22b9930
Remove 6 componentes não utilizados (dashboard-grid, expenses/income by category widgets, installment analysis panels, fatura-warning-dialog). Remove funções/tipos não utilizados: successResult, generateApiToken, validateApiToken, getTodayUTC/Local, formatDateForDb, getDateInfo, calculatePercentage, roundToDecimals, safeParseInt/Float, isPeriodValid, getLastPeriods, normalizeWhitespace, formatCurrency wrapper, InboxItemInput, InboxBatchInput, ProcessInboxInput, DiscardInboxInput, LancamentosColumnId, 5 funções de anticipation-helpers. Redireciona imports de formatCurrency para lib/lancamentos/formatting-helpers. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
27 lines
783 B
TypeScript
27 lines
783 B
TypeScript
/**
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* Utility functions for mathematical calculations
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*/
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/**
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* Calculates percentage change between two values
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* @param current - Current value
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* @param previous - Previous value
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* @returns Percentage change or null if previous is 0 and current is also 0
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*/
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export function calculatePercentageChange(
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current: number,
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previous: number,
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): number | null {
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const EPSILON = 0.01; // Considera valores menores que 1 centavo como zero
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if (Math.abs(previous) < EPSILON) {
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if (Math.abs(current) < EPSILON) return null;
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return current > 0 ? 100 : -100;
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}
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const change = ((current - previous) / Math.abs(previous)) * 100;
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// Protege contra valores absurdos (retorna null se > 1 milhão %)
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return Number.isFinite(change) && Math.abs(change) < 1000000 ? change : null;
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}
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