1 var toInteger = require('./toInteger');
3 /** Error message constants. */
4 var FUNC_ERROR_TEXT = 'Expected a function';
7 * Creates a function that invokes `func`, with the `this` binding and arguments
8 * of the created function, while it's called less than `n` times. Subsequent
9 * calls to the created function return the result of the last `func` invocation.
15 * @param {number} n The number of calls at which `func` is no longer invoked.
16 * @param {Function} func The function to restrict.
17 * @returns {Function} Returns the new restricted function.
20 * jQuery(element).on('click', _.before(5, addContactToList));
21 * // => Allows adding up to 4 contacts to the list.
23 function before(n, func) {
25 if (typeof func != 'function') {
26 throw new TypeError(FUNC_ERROR_TEXT);
31 result = func.apply(this, arguments);
40 module.exports = before;