Returns true if a value is a plain object, array or function.
An extendable Error class that actually works, with TypeScript definition files, supporting old and new style classes and compatibility even with the oldest browsers
Extend constructors using backbone's .extend signature
An accessible vanilla JS accordion with extensible API.
Full-featured [koa][] body parser! Support parsing text, buffer, json, json patch, json api, csp-report, multipart, form and urlencoded bodies. Works for koa@1, koa@2 and will work for koa@3.