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35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/liftN.js
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import _curry2 from './internal/_curry2.js';
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import _reduce from './internal/_reduce.js';
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import ap from './ap.js';
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import curryN from './curryN.js';
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import map from './map.js';
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/**
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* "lifts" a function to be the specified arity, so that it may "map over" that
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* many lists, Functions or other objects that satisfy the [FantasyLand Apply spec](https://github.com/fantasyland/fantasy-land#apply).
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*
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* @func
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* @memberOf R
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* @since v0.7.0
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* @category Function
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* @sig Number -> (*... -> *) -> ([*]... -> [*])
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* @param {Function} fn The function to lift into higher context
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* @return {Function} The lifted function.
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* @see R.lift, R.ap
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* @example
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*
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* const madd3 = R.liftN(3, (...args) => R.sum(args));
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* madd3([1,2,3], [1,2,3], [1]); //=> [3, 4, 5, 4, 5, 6, 5, 6, 7]
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*/
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var liftN = _curry2(function liftN(arity, fn) {
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var lifted = curryN(arity, fn);
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return curryN(arity, function() {
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return _reduce(ap, map(lifted, arguments[0]), Array.prototype.slice.call(arguments, 1));
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});
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});
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export default liftN;
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