Security News
Cloudflare Adds Security.txt Setup Wizard
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
@analytics/type-utils
Advanced tools
A tiny tree shakable utility library for runtime type checking.
The entire package weighs in at 2.22kb
.
This package exposes re-usable runtime type checking functions. This is useful for shrinking bundle sizes.
Install @analytics/type-utils
from npm.
npm install @analytics/type-utils
Below is the api for @analytics/type-utils
.
isBrowser
Check if currently in browser context
import { isBrowser } from '@analytics/type-utils'
if (isBrowser) {
console.log('do things in browser env')
}
isNode
Check if currently in Node.js context
import { isNode } from '@analytics/type-utils'
if (isNode) {
console.log('do things in node env')
}
isDeno
Check if currently in Deno context
import { isDeno } from '@analytics/type-utils'
if (isDeno) {
console.log('do things in deno env')
}
isWebWorker
Check if currently in WebWorker context
import { isWebWorker } from '@analytics/type-utils'
if (isWebWorker) {
console.log('do things in webworker env')
}
isJsDom
Check if currently in JSDOM context
import { isJsDom } from '@analytics/type-utils'
if (isJsDom) {
console.log('do things in JSDOM env')
}
isString
Check if value is string
import { isString } from '@analytics/type-utils'
const xyz = 'hi'
console.log(isString(xyz))
// true
isNumber
Check if value is number
import { isNumber } from '@analytics/type-utils'
const xyz = 123
console.log(isNumber(xyz))
// true
isBoolean
Check if value is boolean
import { isBoolean } from '@analytics/type-utils'
const myBool = true
console.log(isBoolean(myBool))
// true
isPrimitive
Check if value is primitive JS value.
import { isPrimitive } from '@analytics/type-utils'
isPrimitive(true) // => true
isPrimitive({}) // => false
isPrimitive(0) // => true
isPrimitive('1') // => true
isPrimitive(1.1) // => true
isPrimitive(NaN) // => true
isPrimitive(Infinity) // => true
isPrimitive(function() {}) // => false
isPrimitive(Date), // => false
isPrimitive(null) // => true
isPrimitive(undefined) // => true
isArray
Check if value is array
import { isArray } from '@analytics/type-utils'
const myArr = ['x', 'y']
console.log(isArray(myArr))
// true
isObject
Check if value is object
import { isObject } from '@analytics/type-utils'
const myObj = { cool: 'hello' }
console.log(isObject(myObj))
// true
isUndefined
Check if value is undefined
import { isUndefined } from '@analytics/type-utils'
let myval
console.log(isUndefined(myval))
// true
isFunction
Check if value is function
import { isFunction } from '@analytics/type-utils'
function xyz() {}
console.log(isFunction(xyz))
// true
isClass
Check if value is javascript class
import { isClass } from '@analytics/type-utils'
class MyClass {}
console.log(isClass(MyClass))
// true
isPromise
Check if value is javascript promise
import { isPromise } from '@analytics/type-utils'
const myPromise = Promise.resolve()
console.log(isPromise(myPromise))
// true
isErrorLike
Check if value is javascript isErrorLike
import { isErrorLike } from '@analytics/type-utils'
isErrorLike(new Error()) // True
isErrorLike({ name: "Error!", message: "This is an error", other: 0 }) // True
isErrorLike({}) // False
isErrorLike({ name: "Error", message: null }) // False
// Works as a typguard
const something = {name: "Error", message: "This is an error"} as unknown
if (isErrorLike(something)) {
console.log(something.name) // No Typescript error
}
isRegex
Check if value is regular expression.
import { isRegex } from '@analytics/type-utils'
let myval = /pattern/gm
console.log(isRegex(myval))
// true
isNoOp
Check if value is a noOp
function.
import { isNoOp } from '@analytics/type-utils'
function empty () { }
console.log(isNoOp(isNoOp))
// true
isTruthy
Check if value is truthy.
import { isTruthy } from '@analytics/types-utils'
console.log(isTruthy('')) // false
console.log(isTruthy('false')) // false
console.log(isTruthy('FALSE')) // false
console.log(isTruthy(0)) // false
console.log(isTruthy(null)) // false
console.log(isTruthy(undefined)) // false
console.log(isTruthy('true')) // true
console.log(isTruthy(1)) // true
console.log(isTruthy({})) // true
console.log(isTruthy([])) // true
console.log(isTruthy(function() { })) // true
isEmail
Check if value is an email.
import { isEmail } from '@analytics/type-utils'
console.log(isEmail('email@email.com'))
// true
console.log(isEmail('other-thing'))
// false
isElement
Check if value is a a DOM node.
import { isElement } from '@analytics/type-utils'
const formElement = document.querySelector('.my-form')
console.log(isElement(formElement))
// true
isNodeList
Check if value is a list of DOM nodes.
import { isNodeList } from '@analytics/type-utils'
const buttons = document.querySelectorAll('button')
console.log(isNodeList(buttons))
// true
isForm
Check if value is a noOp
function.
import { isForm } from '@analytics/type-utils'
const formElement = document.querySelector('.my-form')
console.log(isForm(formElement))
// true
FAQs
Tiny runtime type checking utils
We found that @analytics/type-utils demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
Security News
The Socket Research team breaks down a malicious npm package targeting the legitimate DOMPurify library. It uses obfuscated code to hide that it is exfiltrating browser and crypto wallet data.
Security News
ENISA’s 2024 report highlights the EU’s top cybersecurity threats, including rising DDoS attacks, ransomware, supply chain vulnerabilities, and weaponized AI.