You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
517 B
21 lines
517 B
/*! |
|
* array-initial <https://github.com/jonschlinkert/array-initial> |
|
* |
|
* Copyright (c) 2014 Jon Schlinkert, contributors. |
|
* Licensed under the MIT license. |
|
*/ |
|
|
|
var isNumber = require('is-number'); |
|
var slice = require('array-slice'); |
|
|
|
module.exports = function arrayInitial(arr, num) { |
|
if (!Array.isArray(arr)) { |
|
throw new Error('array-initial expects an array as the first argument.'); |
|
} |
|
|
|
if (arr.length === 0) { |
|
return null; |
|
} |
|
|
|
return slice(arr, 0, arr.length - (isNumber(num) ? num : 1)); |
|
};
|
|
|