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on this file since d24f17c was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
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[d24f17c] | 1 | import _curry2 from "./internal/_curry2.js";
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| 2 | import curryN from "./curryN.js";
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| 3 | /**
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| 4 | * Returns a function of arity `n` from a (manually) curried function.
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| 5 | * Note that, the returned function is actually a ramda style
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| 6 | * curryied function, which can accept one or more arguments in each
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| 7 | * function calling.
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| 8 | *
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| 9 | * @func
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| 10 | * @memberOf R
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| 11 | * @since v0.14.0
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| 12 | * @category Function
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| 13 | * @sig Number -> (a -> b -> c ... -> z) -> ((a -> b -> c ...) -> z)
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| 14 | * @param {Number} length The arity for the returned function.
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| 15 | * @param {Function} fn The function to uncurry.
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| 16 | * @return {Function} A new function.
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| 17 | * @see R.curry, R.curryN
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| 18 | * @example
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| 19 | *
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| 20 | * const addFour = a => b => c => d => a + b + c + d;
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| 21 | *
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| 22 | * const uncurriedAddFour = R.uncurryN(4, addFour);
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| 23 | * uncurriedAddFour(1, 2, 3, 4); //=> 10
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| 24 | */
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| 25 |
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| 26 | var uncurryN =
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| 27 | /*#__PURE__*/
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| 28 | _curry2(function uncurryN(depth, fn) {
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| 29 | return curryN(depth, function () {
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| 30 | var currentDepth = 1;
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| 31 | var value = fn;
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| 32 | var idx = 0;
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| 33 | var endIdx;
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| 34 |
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| 35 | while (currentDepth <= depth && typeof value === 'function') {
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| 36 | endIdx = currentDepth === depth ? arguments.length : idx + value.length;
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| 37 | value = value.apply(this, Array.prototype.slice.call(arguments, idx, endIdx));
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| 38 | currentDepth += 1;
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| 39 | idx = endIdx;
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| 40 | }
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| 41 |
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| 42 | return value;
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| 43 | });
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| 44 | });
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| 45 |
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| 46 | export default uncurryN; |
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