Q: Are you using Vanilla Javascript? A: ...ish Javascript code snippets organized in an OOP structure, including:

• Type-safety and type-casting - assisting developers in overcoming issues related to loose typing via Vanilla Javascript (rather than syntactic sugar à la TypeScript)
• OOP features - partial class definitions with shared private members and multiple inheritance
• Strong typing of function signatures along with support for dynamic polymorphism/function overloading
• Dependency injection
• Object traversal, extension and querying features
• Custom events
• Data interpolation - CSV, XML, Punycode and POJO parsing
• Additional Types - Enumerations, GUID
• Large/small number support
• Support back to IE8, with most features supported back to IE6
• Growing unit test coverage with Chai.Assert
• Isomorphic - client- and server-side code in one codebase.

with all non-UI features available both client-side (in-browser) and server-side (Node/etc.).

All features are organized in individually includable mixins organized by namespace/major features with only the core ish.js functionality required to bootstrap.

Documentation available at https://campbeln.github.io/jsish