mirror of
https://github.com/swc-project/swc.git
synced 2024-12-26 23:27:56 +03:00
45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
|
// Loaded from https://deno.land/x/ramda@v0.27.2/source/traverse.js
|
||
|
|
|
||
|
|
|
||
|
|
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 = _curry3(function traverse(of, f, traversable) {
|
||
|
|
return (
|
||
|
|
typeof traversable['fantasy-land/traverse'] === 'function'
|
||
|
|
? traversable['fantasy-land/traverse'](f, of)
|
||
|
|
: typeof traversable.traverse === 'function'
|
||
|
|
? traversable.traverse(f, of)
|
||
|
|
: sequence(of, map(f, traversable))
|
||
|
|
);
|
||
|
|
});
|
||
|
|
export default traverse;
|