Exploring the Uses of SystemJS with TypeScript Loader

Can someone help clarify something about this TypeScript plugin for SystemJS?

https://github.com/frankwallis/plugin-typescript/

Here is what the plugin does:

This SystemJS plugin allows you to import TypeScript files directly and have them compiled in the browser, with compilation errors displayed in the console.

I'm curious about the potential use cases for using this plugin.

  • Why would developers choose to import .ts files directly and compile them in the browser instead of compiling them beforehand and importing .js files?
  • Wouldn't compiling in the browser impact performance and loading times?
  • Is this plugin intended only for use in development environments?

Answer №1

Greetings from the creator of plugin-typescript. In terms of web development, in-browser compilation serves as a tool solely for development purposes. For production, it's recommended to utilize systemjs-builder (alongside plugin-typescript) to generate a consolidated file containing all the transpiled JavaScript code.

Since the initial development of the plugin, various new workflows have emerged for typescript & systemjs (such as single-file transpilation, vscode integration, systemjs hot-reloading, typescript system.register output, and more). The choice of workflow that best suits your needs will largely depend on factors like the size of your application, the server/platform you're working with, and your own personal preferences.

Answer №2

It would be absurd for anyone with a rational mind to compile or transpile code in the browser for production; it's like using a slow turtle to deliver your mail instead of walking yourself.

This tool is specifically designed for TypeScript developers to make their lives easier by eliminating the need for manual compilation after each edit, and it even offers additional features such as hot reloading.

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