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import _concat from './internal/_concat';import _curry1 from './internal/_curry1';import curryN from './curryN';

/** * Creates a new list iteration function from an existing one by adding two new * parameters to its callback function: the current index, and the entire list. * * This would turn, for instance, [`R.map`](#map) function into one that * more closely resembles `Array.prototype.map`. Note that this will only work * for functions in which the iteration callback function is the first * parameter, and where the list is the last parameter. (This latter might be * unimportant if the list parameter is not used.) * * @func * @memberOf R * @since v0.15.0 * @category Function * @category List * @sig ((a ... -> b) ... -> [a] -> *) -> ((a ..., Int, [a] -> b) ... -> [a] -> *) * @param {Function} fn A list iteration function that does not pass index or list to its callback * @return {Function} An altered list iteration function that passes (item, index, list) to its callback * @example * *      const mapIndexed = R.addIndex(R.map); *      mapIndexed((val, idx) => idx + '-' + val, ['f', 'o', 'o', 'b', 'a', 'r']); *      //=> ['0-f', '1-o', '2-o', '3-b', '4-a', '5-r'] */var addIndex = _curry1(function addIndex(fn) {  return curryN(fn.length, function() {    var idx = 0;    var origFn = arguments[0];    var list = arguments[arguments.length - 1];    var args = Array.prototype.slice.call(arguments, 0);    args[0] = function() {      var result = origFn.apply(this, _concat(arguments, [idx, list]));      idx += 1;      return result;    };    return fn.apply(this, args);  });});export default addIndex;