Alex Gleason
20 lines
710 B
TypeScript
20 lines
710 B
TypeScript
/**
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* Format a number into a compact human-readable string.
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*
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* - **Below 1k**: exact number (e.g. `42`, `999`)
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* - **1k–9.9k**: one decimal place (e.g. `1.7k`, `5.3k`); round thousands drop the decimal (e.g. `2k` not `2.0k`)
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* - **10k+**: whole thousands (e.g. `314k`)
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* - **Same logic around 1M**: e.g. `1.7M`, `2M`, `314M`
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*/
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export function formatNumber(n: number): string {
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if (n >= 1_000_000) {
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if (n >= 10_000_000) return `${Math.floor(n / 1_000_000)}M`;
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return `${(n / 1_000_000).toFixed(1).replace(/\.0$/, '')}M`;
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}
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if (n >= 1_000) {
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if (n >= 10_000) return `${Math.floor(n / 1_000)}k`;
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return `${(n / 1_000).toFixed(1).replace(/\.0$/, '')}k`;
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}
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return String(n);
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}
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