31 lines
1.0 KiB
TypeScript
31 lines
1.0 KiB
TypeScript
/**
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* Creates a new Map with the same values but with keys transformed by the provided function.
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*
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* This function takes a Map and a function that generates a new key from each value-key pair.
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* It returns a new Map where the keys are the result of applying the function to each entry,
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* while the values remain the same.
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*
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* @template K - The type of keys in the Map.
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* @template V - The type of values in the Map.
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* @param {Map<K, V>} map - The Map to transform.
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* @param {(value: V, key: K, object: Map<K, V>) => K} getNewKey - A function that generates a new key from a value-key pair.
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* @returns {Map<K, V>} A new Map with transformed keys and the same values.
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*
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* @example
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* const map = new Map([
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* ['a', 1],
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* ['b', 2],
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* ['c', 3]
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* ]);
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* const result = mapKeys(map, (value, key) => key.toUpperCase());
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* // result will be:
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* // Map(3) {
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* // 'A' => 1,
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* // 'B' => 2,
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* // 'C' => 3
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* // }
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*/
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declare function mapKeys<K, V>(map: Map<K, V>, getNewKey: (value: V, key: K, object: Map<K, V>) => K): Map<K, V>;
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export { mapKeys };
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