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var baseEach = require('../internal/baseEach'),
invokePath = require('../internal/invokePath'),
isArrayLike = require('../internal/isArrayLike'),
isKey = require('../internal/isKey'),
restParam = require('../function/restParam');
/**
* Invokes the method at `path` on each element in `collection`, returning
* an array of the results of each invoked method. Any additional arguments
* are provided to each invoked method. If `methodName` is a function it is
* invoked for, and `this` bound to, each element in `collection`.
*
* @static
* @memberOf _
* @category Collection
* @param {Array|Object|string} collection The collection to iterate over.
* @param {Array|Function|string} path The path of the method to invoke or
* the function invoked per iteration.
* @param {...*} [args] The arguments to invoke the method with.
* @returns {Array} Returns the array of results.
* @example
*
* _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
* // => [[1, 5, 7], [1, 2, 3]]
*
* _.invoke([123, 456], String.prototype.split, '');
* // => [['1', '2', '3'], ['4', '5', '6']]
*/
var invoke = restParam(function(collection, path, args) {
var index = -1,
isFunc = typeof path == 'function',
isProp = isKey(path),
result = isArrayLike(collection) ? Array(collection.length) : [];
baseEach(collection, function(value) {
var func = isFunc ? path : (isProp && value != null && value[path]);
result[++index] = func ? func.apply(value, args) : invokePath(value, path, args);
});
return result;
});
module.exports = invoke;
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