16 lines
581 B
TypeScript
16 lines
581 B
TypeScript
export class RatingTrendDisplay {
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static getTrend(currentRating: number, previousRating: number | undefined): 'up' | 'down' | 'same' {
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if (!previousRating) return 'same';
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if (currentRating > previousRating) return 'up';
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if (currentRating < previousRating) return 'down';
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return 'same';
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}
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static getChangeIndicator(currentRating: number, previousRating: number | undefined): string {
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const change = previousRating ? currentRating - previousRating : 0;
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if (change > 0) return `+${change}`;
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if (change < 0) return `${change}`;
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return '0';
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}
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}
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