1 | import baseRest from './_baseRest.js';
|
---|
2 | import toInteger from './toInteger.js';
|
---|
3 |
|
---|
4 | /** Error message constants. */
|
---|
5 | var FUNC_ERROR_TEXT = 'Expected a function';
|
---|
6 |
|
---|
7 | /**
|
---|
8 | * Creates a function that invokes `func` with the `this` binding of the
|
---|
9 | * created function and arguments from `start` and beyond provided as
|
---|
10 | * an array.
|
---|
11 | *
|
---|
12 | * **Note:** This method is based on the
|
---|
13 | * [rest parameter](https://mdn.io/rest_parameters).
|
---|
14 | *
|
---|
15 | * @static
|
---|
16 | * @memberOf _
|
---|
17 | * @since 4.0.0
|
---|
18 | * @category Function
|
---|
19 | * @param {Function} func The function to apply a rest parameter to.
|
---|
20 | * @param {number} [start=func.length-1] The start position of the rest parameter.
|
---|
21 | * @returns {Function} Returns the new function.
|
---|
22 | * @example
|
---|
23 | *
|
---|
24 | * var say = _.rest(function(what, names) {
|
---|
25 | * return what + ' ' + _.initial(names).join(', ') +
|
---|
26 | * (_.size(names) > 1 ? ', & ' : '') + _.last(names);
|
---|
27 | * });
|
---|
28 | *
|
---|
29 | * say('hello', 'fred', 'barney', 'pebbles');
|
---|
30 | * // => 'hello fred, barney, & pebbles'
|
---|
31 | */
|
---|
32 | function rest(func, start) {
|
---|
33 | if (typeof func != 'function') {
|
---|
34 | throw new TypeError(FUNC_ERROR_TEXT);
|
---|
35 | }
|
---|
36 | start = start === undefined ? start : toInteger(start);
|
---|
37 | return baseRest(func, start);
|
---|
38 | }
|
---|
39 |
|
---|
40 | export default rest;
|
---|