1
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var apply = require('./_apply');
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2
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3
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/* Built-in method references for those with the same name as other `lodash` methods. */
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4
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var nativeMax = Math.max;
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5
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6
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/**
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7
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* A specialized version of `baseRest` which transforms the rest array.
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8
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*
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9
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* @private
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10
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* @param {Function} func The function to apply a rest parameter to.
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11
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* @param {number} [start=func.length-1] The start position of the rest parameter.
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12
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* @param {Function} transform The rest array transform.
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13
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* @returns {Function} Returns the new function.
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14
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*/
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15
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function overRest(func, start, transform) {
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16
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start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
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17
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return function() {
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18
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var args = arguments,
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19
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index = -1,
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20
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length = nativeMax(args.length - start, 0),
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21
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array = Array(length);
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22
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23
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while (++index < length) {
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24
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array[index] = args[start + index];
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25
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}
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index = -1;
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27
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var otherArgs = Array(start + 1);
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28
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while (++index < start) {
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29
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otherArgs[index] = args[index];
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30
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}
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otherArgs[start] = transform(array);
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32
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return apply(func, this, otherArgs);
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33
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};
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}
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35
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36
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module.exports = overRest;
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