TypeScript Loader for SystemJS

plugin-typescript (current stable version 8.0.0) is a loader plugin for SystemJS that enables the direct `System.import` of TypeScript files. It transpiles `.ts` and `.tsx` files on the fly within the browser or Node.js environment when loaded by SystemJS. This package was the officially supported mechanism for transpiling TypeScript within JSPM 0.17.0 and later, providing immediate compilation and error reporting to the console. It supports TypeScript versions 2.0.0 and higher, with specific older versions (4.0.16 for TS 1.8.1, 2.x.x for TS 1.7.5 and below) required for compatibility. The package's release cadence was tied to the evolution of SystemJS and JSPM, focusing on browser-side transpilation and integration with SystemJS's module loading capabilities.