[d565449] | 1 | import baseRest from './_baseRest.js';
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| 2 | import toInteger from './toInteger.js';
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| 3 |
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| 4 | /** Error message constants. */
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| 5 | var FUNC_ERROR_TEXT = 'Expected a function';
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| 6 |
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| 7 | /**
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| 8 | * Creates a function that invokes `func` with the `this` binding of the
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| 9 | * created function and arguments from `start` and beyond provided as
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| 10 | * an array.
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| 11 | *
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| 12 | * **Note:** This method is based on the
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| 13 | * [rest parameter](https://mdn.io/rest_parameters).
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| 14 | *
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| 15 | * @static
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| 16 | * @memberOf _
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| 17 | * @since 4.0.0
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| 18 | * @category Function
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| 19 | * @param {Function} func The function to apply a rest parameter to.
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| 20 | * @param {number} [start=func.length-1] The start position of the rest parameter.
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| 21 | * @returns {Function} Returns the new function.
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| 22 | * @example
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| 23 | *
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| 24 | * var say = _.rest(function(what, names) {
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| 25 | * return what + ' ' + _.initial(names).join(', ') +
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| 26 | * (_.size(names) > 1 ? ', & ' : '') + _.last(names);
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| 27 | * });
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| 28 | *
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| 29 | * say('hello', 'fred', 'barney', 'pebbles');
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| 30 | * // => 'hello fred, barney, & pebbles'
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| 31 | */
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| 32 | function rest(func, start) {
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| 33 | if (typeof func != 'function') {
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| 34 | throw new TypeError(FUNC_ERROR_TEXT);
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| 35 | }
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| 36 | start = start === undefined ? start : toInteger(start);
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| 37 | return baseRest(func, start);
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| 38 | }
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| 39 |
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| 40 | export default rest;
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