scriptutils 
Install
Node.js
npm install --save scriptutils
var scriptutils = require('scriptutils');
Browser
<script src="https://unpkg.com/scriptutils"></script> (will run latest version)
<script src="https://unpkg.com/scriptutils@X.Y.Z/dist/browser/index.js"></script> (will run specific version, replace X.Y.Z with version you wish to run)
In browser mode it automatically creates a variable in the global scope called scriptutils. All examples will work on browser and Node.js.
Arrays
Array.insert(index, items)
This function will insert item(s) into an array at the index you specify. index will be the new index of the item(s) you wish to insert. items can refer to an object or array of objects. If index is less than 1 it will insert the item(s) at the beginning of the array. If index is greater than or equal to the last index of the array the item(s) will be inserted at the end of the array.
var myArray = ["Hello", "World"];
myArray = myArray.insert(1, "My");
console.log(myArray); // ["Hello", "My", "World"]
var myArray = ["Hello", "World"];
myArray = myArray.insert(1, ["My", "Amazing"]);
console.log(myArray); // ["Hello", "My", "Amazing", "World"]
Array.remove(index, [index, index, ...])
This function will remove the item at the corresponding index. index corresponds to a number. If multiple parameters are passed in all indexes will be deleted. If index is less than 1 it will insert the item(s) at the beginning of the array. If index is greater than or equal to the last index of the array the item(s) will be inserted at the end of the array.
var myArray = ["Hello", "World"];
myArray = myArray.remove(1);
console.log(myArray); // ["Hello"]
var myArray = ["Hello", "World"];
myArray = myArray.remove(1, 2);
console.log(myArray); // []
Array.shuffle()
This function will shuffle the array. This function has the potential to have different outputs every time it is run.
var myArray = ["Hello", "World"];
myArray = myArray.shuffle();
console.log(myArray); // ["World", "Hello"]
Array.randomElement()
This function will return a random element in the given array. This function has the potential to have different outputs every time it is run.
var myArray = ["Hello", "World"];
console.log(myArray.randomElement()); // "World"
Array.swap(firstIndex, secondIndex)
This function will swap item(s) into an array at the indexes you specify. firstIndex and secondIndex reference the two items indexes that will be swapped in the array. If firstIndex or secondIndex don't exist in the array the array won't be changed.
var myArray = ["Hello", "World"];
myArray = myArray.swap(0, 1);
console.log(myArray); // ["World", "Hello"]
Array.max()
This function will return the largest number in an array. If no numbers exist in array NaN will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.max()); // 5
Array.min()
This function will return the smallest number in an array. If no numbers exist in array NaN will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.min()); // 1
Array.first()
This function will return the first element in an array. If array is empty undefined will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.first()); // 1
Array.last()
This function will return the last element in an array. If array is empty undefined will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.last()); // 5
Array.frontPad(item, length)
This function will return a new array with padding to the length specified. If length specified is less than array length the same array will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.frontPad("item", 8)); // ["item", "item", "item", 1, 2, 3, 4, 5]
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.frontPad("item", 3)); // [1, 2, 3, 4, 5]
Array.backPad(item, length)
This function will return a new array with padding to the length specified. If length specified is less than array length the same array will be returned.
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.backPad("item", 8)); // [1, 2, 3, 4, 5, "item", "item", "item"]
var myArray = [1, 2, 3, 4, 5];
console.log(myArray.backPad("item", 3)); // [1, 2, 3, 4, 5]
Numbers
randomInt([min, max])
This function will return a random integer based on the minimum and maximum values passed in. If no minimum or maximum values are passed in the function will output a random number between 1 and 100. This function has the potential to have different outputs every time it is run.
var randomNumber = scriptutils.randomInt(5, 50);
console.log(randomNumber); // a random number between 5 and 50
var randomNumber = scriptutils.randomInt();
console.log(randomNumber); // a random number between 1 and 100
randomFloat([min, max])
This function will return a random float based on the minimum and maximum values passed in. If no minimum or maximum values are passed in the function will output a random number between 1 and 100. This function has the potential to have different outputs every time it is run.
var randomNumber = scriptutils.randomFloat(5, 50);
console.log(randomNumber); // a random number (float) between 5 and 50
var randomNumber = scriptutils.randomFloat();
console.log(randomNumber); // a random number (float) between 1 and 100
Number.isInt()
This function will return a boolean depending on if the number is an integer.
var randomNumber = 5;
console.log(randomNumber.isInt()); // true
var randomNumber = 1.25;
console.log(randomNumber.isInt()); // false
Number.isFloat()
This function will return a boolean depending on if the number is an float.
var randomNumber = 5;
console.log(randomNumber.isFloat()); // false
var randomNumber = 1.25;
console.log(randomNumber.isFloat()); // true
Hash
hashFolder(folderpath)
This function will return a hash of the files in the folder you pass in. This function is only available in the Node.js version of scriptutils.
var folderHash = scriptutils.hashFolder("/");
console.log(folderHash); // folder hash of files in "/" directory
String
String.removeAfter(character)
This function will return a new string removing the character you pass in and everything after. Unlike other scriptutils functions this function will not mutate the original string.
var myString = "Hello World";
myString = myString.removeAfter(" ");
console.log(myString); // "Hello"
String.removeBefore(character)
This function will return a new string removing the character you pass in and everything before. Unlike other scriptutils functions this function will not mutate the original string.
var myString = "Hello World";
myString = myString.removeBefore(" ");
console.log(myString); // "World"
Promise
Promise.state()
This function will return a new promise that will resolve with one of three options, "pending", "fulfilled", or "rejected". This function is only available in the Node.js version of scriptutils.
var myPromise = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
myPromise.state().then(function (state) {
console.log(state); // "pending"
});
var myPromise = new Promise(function (resolve, reject) {
resolve("OK");
});
myPromise.state().then(function (state) {
console.log(state); // "fulfilled"
});
var myPromise = new Promise(function (resolve, reject) {
reject("Fail");
});
myPromise.state().then(function (state) {
console.log(state); // "rejected"
});
Promise.reflect(promises)
This function will return a new promise that will resolve when all promises passed into array promises are settled (fulfilled or rejected). The value passed into the Promise.then() function will be an array of objects containing the status of the promise (fulfilled or rejected) and the value the promise itself settled with. If the promise settled with an rejection, the e property will hold the value passed by that rejection. Similarly, if the promise settled with a fulfillment, the v property will hold the value passed by that fulfillment. This function is only available in the Node.js version of scriptutils.
var myPromise = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
var myPromiseB = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
Promise.reflect([myPromise, myPromiseB]).then(function (state) {
// At this point both myPromise and myPromiseB have been settled
console.log(state); // [{v:"OK", status:"fulfilled"}, {v:"OK", status:"fulfilled"}]
});
var myPromise = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
var myPromiseB = new Promise(function (resolve, reject) {
setTimeout(function() {
reject("Fail");
}, 1000);
});
Promise.reflect([myPromise, myPromiseB]).then(function (state) {
// At this point both myPromise and myPromiseB have been settled
console.log(state); // [{v:"OK", status:"fulfilled"}, {e:"Fail", status:"rejected"}]
});
var myPromise = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
var myPromiseB = new Promise(function (resolve, reject) {
setTimeout(function() {
reject("Fail");
}, 1000);
});
var myPromiseC = new Promise(function (resolve, reject) {
setTimeout(function() {
resolve("OK");
}, 1000);
});
Promise.reflect([myPromise, myPromiseB, myPromiseC]).then(function (state) {
// At this point both myPromise, myPromiseB, and myPromiseC have been settled
// Unlike Promise.all, this function won't resolve after the first rejection but will only resolve after ALL promises have been settled
console.log(state); // [{v:"OK", status:"fulfilled"}, {e:"Fail", status:"rejected"}, {v:"OK", status:"fulfilled"}]
});
Timeout
scriptutils.timeout(ms)
This function will return a promise that will resolve after the number of milliseconds passed in. The promise will reject if an invalid number of milliseconds are passed in. This function is only available in the Node.js version of scriptutils.
scriptutils.timeout(1000).then(function() {
console.log("This will be run after 1 second");
});
scriptutils.timeout("test").catch(function() {
console.log("This will be run because the number of milliseconds is invalid");
});
Mutation
All functions in scriptutils are non-mutating. You must set your variable to the new variable that is returned.