TypeScript 3.4 --incremental support

[MadaraUchiha]

TypeScript 3.4 has landed, and it comes with an --incremental compiler option that creates a compilation cache file to speed up successive builds of the same code.

I'm opening this issue to bring it some attention and track if anything is needed to support it with awesome-typescript-loader.

[andykais]

referencing the currently open issue as the above one was marked as a duplicate of this: microsoft/TypeScript#29978. Supposedly it will land in typescript@3.5

[chibongktbyte]

Hi. Any update on this now that Typescript 3.5 has come out?

[Rowno]

The incremental APIs are now available as part of TypeScript 3.6: https://devblogs.microsoft.com/typescript/announcing-typescript-3-6/#apis-to-support-build-and-incremental