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12 lines
296 B
TypeScript
12 lines
296 B
TypeScript
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export function groupBy<T>(items: T[], keyFn: (item: T) => string): Record<string, T[]> {
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const result: Record<string, T[]> = {};
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for (const item of items) {
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const key = keyFn(item);
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if (!result[key]) {
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result[key] = [];
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}
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result[key].push(item);
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}
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return result;
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}
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