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import _curry1 from './_curry1';import _curry2 from './_curry2';import _isPlaceholder from './_isPlaceholder';

/** * Optimized internal three-arity curry function. * * @private * @category Function * @param {Function} fn The function to curry. * @return {Function} The curried function. */export default function _curry3(fn) {  return function f3(a, b, c) {    switch (arguments.length) {      case 0:        return f3;      case 1:        return _isPlaceholder(a)          ? f3          : _curry2(function(_b, _c) { return fn(a, _b, _c); });      case 2:        return _isPlaceholder(a) && _isPlaceholder(b)          ? f3          : _isPlaceholder(a)            ? _curry2(function(_a, _c) { return fn(_a, b, _c); })            : _isPlaceholder(b)              ? _curry2(function(_b, _c) { return fn(a, _b, _c); })              : _curry1(function(_c) { return fn(a, b, _c); });      default:        return _isPlaceholder(a) && _isPlaceholder(b) && _isPlaceholder(c)          ? f3          : _isPlaceholder(a) && _isPlaceholder(b)            ? _curry2(function(_a, _b) { return fn(_a, _b, c); })            : _isPlaceholder(a) && _isPlaceholder(c)              ? _curry2(function(_a, _c) { return fn(_a, b, _c); })              : _isPlaceholder(b) && _isPlaceholder(c)                ? _curry2(function(_b, _c) { return fn(a, _b, _c); })                : _isPlaceholder(a)                  ? _curry1(function(_a) { return fn(_a, b, c); })                  : _isPlaceholder(b)                    ? _curry1(function(_b) { return fn(a, _b, c); })                    : _isPlaceholder(c)                      ? _curry1(function(_c) { return fn(a, b, _c); })                      : fn(a, b, c);    }  };}