is-obj
Check if a value is an object
Check if a value is an object
Check if a value is a plain object
Type check values
Determine if a value is an ES6 Symbol or not.
Returns true if the platform is windows. UMD module, works with node.js, commonjs, browser, AMD, electron, etc.
Check if a URL is absolute
ES2015 `Number.isNaN()` ponyfill
Check if something is a promise
Is this value negative zero? === will lie to you
Check if the process is running inside a Docker container
ES2015-compliant shim for Object.is - differentiates between -0 and +0
Is this an arguments object? It's a harder question than you think.
Check if something is a generator function
ES2015 Number.isFinite() ponyfill
Check if your package was installed globally
Check if a string is SVG
Check if your code is running as an npm script
Check if a value is a regular expression
unist utility to check if a node passes a test
Check if a project is using Yarn