litdevs/install-is

Predicate that returns true if base64 string.

Predicate that returns true for "boolean" values.

Determine if an object is a Buffer

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

Detect if the current environment is a CI server

high-performance, zero-dependency circular reference check for objects (or arrays)

checks if a given function is isIsIsIsIsIsOdd

Checks whether the input string contains any Chinese text (at least one character). Works with Traditional and Simplified. Unlike the is-chinese package, returns `true` even if the string contains mixed Chinese and non-Chinese characters.

Checks if a string contains one or more emojis 👀

A library for detecting Personally Identifiable Information (PII) in strings of text.

Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

Is-Alive checks servers if they are responding anymore

Check if a list of hosts servers are all recheable.

Check if a value is any kind of array

Is this an arguments object? It's a harder question than you think.

Checks if the given value is an array or array-like object.

Determines if an object can be used as an array

Check if something is an ES7 async function

Is this value an ES BigInt?

Detects if a file is binary based on its content

Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Check if a string is the value of `border-style` property

Checks if an input string is a capitalized or not.

Check if an URL is from CDN

assert whether a string is chinese

Check if a string is CSS color value