@ramda/minby/minBy.js

R.minBy exported as a module

//  Ramda v0.26.1
//  https://github.com/ramda/ramda
//  (c) 2013-2019 Scott Sauyet, Michael Hurley, and David Chambers
//  Ramda may be freely distributed under the MIT license.

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (factory((global.R = {})));
}(this, (function (exports) { 'use strict';

  function _isPlaceholder(a) {
    return a != null &&
           typeof a === 'object' &&
           a['@@functional/placeholder'] === true;
  }

  /**
   * Optimized internal one-arity curry function.
   *
   * @private
   * @category Function
   * @param {Function} fn The function to curry.
   * @return {Function} The curried function.
   */
  function _curry1(fn) {
    return function f1(a) {
      if (arguments.length === 0 || _isPlaceholder(a)) {
        return f1;
      } else {
        return fn.apply(this, arguments);
      }
    };
  }

  /**
   * Optimized internal two-arity curry function.
   *
   * @private
   * @category Function
   * @param {Function} fn The function to curry.
   * @return {Function} The curried function.
   */
  function _curry2(fn) {
    return function f2(a, b) {
      switch (arguments.length) {
        case 0:
          return f2;
        case 1:
          return _isPlaceholder(a)
            ? f2
            : _curry1(function(_b) { return fn(a, _b); });
        default:
          return _isPlaceholder(a) && _isPlaceholder(b)
            ? f2
            : _isPlaceholder(a)
              ? _curry1(function(_a) { return fn(_a, b); })
              : _isPlaceholder(b)
                ? _curry1(function(_b) { return fn(a, _b); })
                : fn(a, b);
      }
    };
  }

  /**
   * Optimized internal three-arity curry function.
   *
   * @private
   * @category Function
   * @param {Function} fn The function to curry.
   * @return {Function} The curried function.
   */
  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);
      }
    };
  }

  /**
   * Takes a function and two values, and returns whichever value produces the
   * smaller result when passed to the provided function.
   *
   * @func
   * @memberOf R
   * @since v0.8.0
   * @category Relation
   * @sig Ord b => (a -> b) -> a -> a -> a
   * @param {Function} f
   * @param {*} a
   * @param {*} b
   * @return {*}
   * @see R.min, R.maxBy
   * @example
   *
   *      //  square :: Number -> Number
   *      const square = n => n * n;
   *
   *      R.minBy(square, -3, 2); //=> 2
   *
   *      R.reduce(R.minBy(square), Infinity, [3, -5, 4, 1, -2]); //=> 1
   *      R.reduce(R.minBy(square), Infinity, []); //=> Infinity
   */
  var minBy = _curry3(function minBy(f, a, b) {
    return f(b) < f(a) ? b : a;
  });

  exports.minBy = minBy;

  Object.defineProperty(exports, '__esModule', { value: true });

})));