Minimal module to check if a file is executable across different platforms

Array#isArray polyfill for older browsers and deprecated Node.js versions

Micro check library providing comprehensive type checking and validation operations across different JavaScript environments

Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)

Returns true if the platform is windows, works with node.js, commonjs, browser, AMD, electron, etc.

JavaScript and TypeScript type checking utility functions providing precise type validation with automatic type narrowing.

Check if a string is a URL

Detect whether the terminal supports Unicode

Complete type checking utility library for Node.js with TypeScript support and type guards

Check if a string is SVG

Check if something is a Node.js stream

Check if a value is a plain object created by literal syntax, Object constructor, or Object.create(null)

Check if a path is inside another path

Returns true if a number or string value is a finite number.

Utility library for detecting whether JavaScript code is running within npm or yarn script execution context through environment variable checks

Check if the character represented by a given Unicode code point is fullwidth

Detect if running in Electron environment

Detect if the current environment is a CI server

Determines whether a JavaScript value is callable (can be invoked as a function)

Check if a string matches the name of a Node.js builtin module