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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | 1x 1x 1x 2x 2x | import { Callback } from "@benneq/function";
/**
* Calls a {@link Callback} for each element of an {@link Iterable}.
*
* @example
* Print all elements
* ```ts
* const printAll = tap(x => console.log(x));
* printAll([1, 2, 3]); // 1, 2, 3
* ```
*
* @see {@link forEach} and {@link map} for similar operations
*
* @typeParam T - the {@link Iterable} value type
* @param callback - the {@link Callback} to call
*/
export const tap = <T>(
callback: Callback<[T]>
): ((iterable: Iterable<T>) => IterableIterator<T>) => {
return function* (iterable) {
for (const value of iterable) {
callback(value);
yield value;
}
};
};
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