test-action-debian-package/node_modules/ramda/es/traverse.js

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2020-03-26 14:37:35 +00:00
import _curry3 from "./internal/_curry3.js";
import map from "./map.js";
import sequence from "./sequence.js";
/**
* Maps an [Applicative](https://github.com/fantasyland/fantasy-land#applicative)-returning
* function over a [Traversable](https://github.com/fantasyland/fantasy-land#traversable),
* then uses [`sequence`](#sequence) to transform the resulting Traversable of Applicative
* into an Applicative of Traversable.
*
* Dispatches to the `traverse` method of the third argument, if present.
*
* @func
* @memberOf R
* @since v0.19.0
* @category List
* @sig (Applicative f, Traversable t) => (a -> f a) -> (a -> f b) -> t a -> f (t b)
* @param {Function} of
* @param {Function} f
* @param {*} traversable
* @return {*}
* @see R.sequence
* @example
*
* // Returns `Maybe.Nothing` if the given divisor is `0`
* const safeDiv = n => d => d === 0 ? Maybe.Nothing() : Maybe.Just(n / d)
*
* R.traverse(Maybe.of, safeDiv(10), [2, 4, 5]); //=> Maybe.Just([5, 2.5, 2])
* R.traverse(Maybe.of, safeDiv(10), [2, 0, 5]); //=> Maybe.Nothing
*/
var traverse =
/*#__PURE__*/
_curry3(function traverse(of, f, traversable) {
return typeof traversable['fantasy-land/traverse'] === 'function' ? traversable['fantasy-land/traverse'](f, of) : sequence(of, map(f, traversable));
});
export default traverse;