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