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54 lines
2.3 KiB
TypeScript
54 lines
2.3 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/nAry.js
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import _curry2 from './internal/_curry2.js';
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/**
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* Wraps a function of any arity (including nullary) in a function that accepts
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* exactly `n` parameters. Any extraneous parameters will not be passed to the
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* supplied function.
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*
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* @func
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* @memberOf R
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* @since v0.1.0
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* @category Function
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* @sig Number -> (* -> a) -> (* -> a)
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* @param {Number} n The desired arity of the new function.
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* @param {Function} fn The function to wrap.
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* @return {Function} A new function wrapping `fn`. The new function is guaranteed to be of
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* arity `n`.
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* @see R.binary, R.unary
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* @example
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*
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* const takesTwoArgs = (a, b) => [a, b];
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*
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* takesTwoArgs.length; //=> 2
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* takesTwoArgs(1, 2); //=> [1, 2]
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*
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* const takesOneArg = R.nAry(1, takesTwoArgs);
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* takesOneArg.length; //=> 1
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* // Only `n` arguments are passed to the wrapped function
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* takesOneArg(1, 2); //=> [1, undefined]
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* @symb R.nAry(0, f)(a, b) = f()
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* @symb R.nAry(1, f)(a, b) = f(a)
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* @symb R.nAry(2, f)(a, b) = f(a, b)
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*/
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var nAry = _curry2(function nAry(n, fn) {
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switch (n) {
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case 0: return function() {return fn.call(this);};
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case 1: return function(a0) {return fn.call(this, a0);};
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case 2: return function(a0, a1) {return fn.call(this, a0, a1);};
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case 3: return function(a0, a1, a2) {return fn.call(this, a0, a1, a2);};
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case 4: return function(a0, a1, a2, a3) {return fn.call(this, a0, a1, a2, a3);};
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case 5: return function(a0, a1, a2, a3, a4) {return fn.call(this, a0, a1, a2, a3, a4);};
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case 6: return function(a0, a1, a2, a3, a4, a5) {return fn.call(this, a0, a1, a2, a3, a4, a5);};
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case 7: return function(a0, a1, a2, a3, a4, a5, a6) {return fn.call(this, a0, a1, a2, a3, a4, a5, a6);};
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case 8: return function(a0, a1, a2, a3, a4, a5, a6, a7) {return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7);};
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case 9: return function(a0, a1, a2, a3, a4, a5, a6, a7, a8) {return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7, a8);};
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case 10: return function(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);};
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default: throw new Error('First argument to nAry must be a non-negative integer no greater than ten');
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}
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});
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export default nAry;
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