| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | var apply = require('./_apply'); |
| 2 | |
| 3 | /* Built-in method references for those with the same name as other `lodash` methods. */ |
| 4 | var nativeMax = Math.max; |
| 5 | |
| 6 | /** |
| 7 | * A specialized version of `baseRest` which transforms the rest array. |
| 8 | * |
| 9 | * @private |
| 10 | * @param {Function} func The function to apply a rest parameter to. |
| 11 | * @param {number} [start=func.length-1] The start position of the rest parameter. |
| 12 | * @param {Function} transform The rest array transform. |
| 13 | * @returns {Function} Returns the new function. |
| 14 | */ |
| 15 | function overRest(func, start, transform) { |
| 16 | start = nativeMax(start === undefined ? (func.length - 1) : start, 0); |
| 17 | return function() { |
| 18 | var args = arguments, |
| 19 | index = -1, |
| 20 | length = nativeMax(args.length - start, 0), |
| 21 | array = Array(length); |
| 22 | |
| 23 | while (++index < length) { |
| 24 | array[index] = args[start + index]; |
| 25 | } |
| 26 | index = -1; |
| 27 | var otherArgs = Array(start + 1); |
| 28 | while (++index < start) { |
| 29 | otherArgs[index] = args[index]; |
| 30 | } |
| 31 | otherArgs[start] = transform(array); |
| 32 | return apply(func, this, otherArgs); |
| 33 | }; |
| 34 | } |
| 35 | |
| 36 | module.exports = overRest; |