What were the limitations of early tools like Script#?

Amanda Silver (Microsoft) explains why Script# failed to gain traction and how this led to the creation of TypeScript. The video covers the fundamental limitation of early C#-to-JavaScript compilers: they ignored the JavaScript runtime and ecosystem, making integration with existing JavaScript libraries and web standards impossible. The discussion is targeted at developers interested in the history of JavaScript tooling and understanding why TypeScript succeeded where earlier Microsoft attempts did not.