# All files / dashboard/src/utils format.ts

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100% Branches 30/30
100% Functions 5/5
100% Lines 22/22

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     export function formatDuration(seconds: number | undefined | null): string {
      if (seconds === null || seconds === undefined) return '—';
      if (seconds === 0) return '0s';
      if (seconds < 60) return `${seconds}s`;
      if (seconds < 3600) {
        const m = Math.floor(seconds / 60);
        const s = seconds % 60;
        return s > 0 ? `${m}m ${s}s` : `${m}m`;
      }
      const h = Math.floor(seconds / 3600);
      const remainder = seconds % 3600;
      if (remainder === 0) return `${h}h`;
      const m = Math.floor(remainder / 60);
      return `${h}h ${m}m`;
    }

    export function formatCost(cost: number | undefined | null): string {
      if (cost === null || cost === undefined || cost === 0 || Number.isNaN(cost)) return '$0.00';
      if (cost < 0.01) return `$${cost.toFixed(4)}`;
      return `$${cost.toFixed(2)}`;
    }

    export function formatTokens(tokens: number | undefined | null): string {
      if (!tokens) return '0';
      if (tokens >= 1_000_000) return `${(tokens / 1_000_000).toFixed(1)}M`;
      if (tokens >= 1_000) return `${(tokens / 1_000).toFixed(1)}K`;
      return tokens.toString();
    }

    export function formatDate(dateStr: string): string {
      return new Date(dateStr).toLocaleDateString('en-US', {
        month: 'short',
        day: 'numeric',
        hour: '2-digit',
        minute: '2-digit',
        timeZone: 'UTC',
      });
    }

    export function formatDay(dateStr: string): string {
      const d = dateStr.includes('T') ? new Date(dateStr) : new Date(dateStr + 'T12:00:00');
      return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric', timeZone: 'UTC' });
    }