minutils

Minimal utility methods for node and the browser

minutils

Minimal utility methods for node and the browser.

Node: npm install minutils

Browser: Copy either minutils.js or minutils.min.js (in the root of this repo) into your project. Inlcude on page. Then access it at window.mu.

Because I don't necessarily need to bring in something the size of underscore in small projects. Because there may be methods in this library that aren't in underscore (or other libraries). Because it's fun. Because.

Copies all properties from all objects into destination, replacing any existing properties of the same name.

var person = {name: 'RICHARD'}
extend(person, {age: 124}, {alive: false})
 
console.log(person) // {name: 'RICHARD', age: 124, alive: false} 

Takes all properties from objects and copies them in to destination only if the properties are undefined in destination

person = {name: 'Richard'}
defaults(person, {name: 'Lisa'}, {age: 124}, {alive: false})
 
console.log(person) // {name: 'Richard', age: 124, alive: false} 

Returns a shallow copy of object.

clone({attr: true}) // {attr: true} 

Is the native isArray if exists. Determines whether an object is a real array.

isArray(['first element']) // true 
isArray({'0': 'first element', length: 1}) // false 
isArray(arguments) // false 

Determines whether object is an Object.

isObject([]) // true 
isObject({}) // true 
isObject('') // false 

Determines whether object is a String.

isString('s') // true 
isString({'0': 's'}) // false 

Determines whether object is a Number.

isNumber(10) // true 
isNumber('10') // false 

Determines whether object is a Function.

isFunction(function(){}) // true 
isFunction({}) // false 

Determines whether object is a Boolean.

isBoolean(true) // true 
isBoolean(false) // true 
isBoolean(true) // false 

Determines whether object is a Date.

isDate(new Date) // true 
isDate(10) // false 

Determines whether the object has any values.

isEmpty(null) // true 
isEmpty(undefined) // true 
isEmpty({}) // true 
isEmpty([]) // true 
isEmpty('') // true 
 
isEmpty({key: 'val'}) // false 
isEmpty([1]) // false 
isEmpty('string') // false 

Alias: head

Returns the first n elements of array or the first element if n is 1 (the default).

first([1, 2, 3, 4, 5]) // 1 
first([1, 2, 3, 4, 5], 3) // [1, 2, 3] 

Returns the last n elements of teh array of the last element of the array if n is 1 (the default).

last([1, 2, 3, 4, 5]) // 5 
last([1, 2, 3, 4, 5], 3) // [3, 4, 5] 

Alias: tail

Returns the rest of the array starting at index n (default is 1).

rest([1, 2, 3, 4, 5]) // [2, 3, 4, 5] 
rest([1, 2, 3, 4, 5], 3) // [4, 5] 

Returns an array containing two arrays. The first array contains all the values which the fn evalutates as truthy, the second array contains the rest.

var isEven = function(n) {return n % 2 == 0};
partition([1, 2, 3, 4, 5], isEven) // [[2, 4], [1, 3, 5]] 

(The MIT License)

Copyright (c) 2013 Ben Reinhart

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.