type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

Error comparison and information related utility for node and the browser

Check if a value is a plain object

option parsing and help generation

Check if a value is an object

Check if a path is a file, directory, or symlink

Lowercase the keys of an object

Check if a local or remote port is reachable

Check whether a binary version satisfies a semver range

Create and parse HTTP Content-Type header

Define a lazily evaluated property on an object

Merge objects using their property descriptors

Generate hashes from javascript objects in node and the browser.

Returns true if a value is a plain object, array or function.

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

Check if a binary is working

Force V8 to use fast properties for an object

Returns true if an object was created by the `Object` constructor, or Object.create(null).

Check if a string is a URL