define(['./baseMatches', './baseMatchesProperty', './baseProperty', './bindCallback', '../utility/identity'], function(baseMatches, baseMatchesProperty, baseProperty, bindCallback, identity) { /** * The base implementation of `_.callback` which supports specifying the * number of arguments to provide to `func`. * * @private * @param {*} [func=_.identity] The value to convert to a callback. * @param {*} [thisArg] The `this` binding of `func`. * @param {number} [argCount] The number of arguments to provide to `func`. * @returns {Function} Returns the callback. */ function baseCallback(func, thisArg, argCount) { var type = typeof func; if (type == 'function') { return typeof thisArg == 'undefined' ? func : bindCallback(func, thisArg, argCount); } if (func == null) { return identity; } if (type == 'object') { return baseMatches(func); } return typeof thisArg == 'undefined' ? baseProperty(func + '') : baseMatchesProperty(func + '', thisArg); } return baseCallback; });