Support --build compiler option for typescript projects

[nicojs]

We're currently not support the --build compiler option for typescript projects.

Reproduction steps:

git clone https://github.com/nicojs/typed-inject/
cd typed-inject
npm i
npx stryker run

[nicojs]

Apparently, the TS team didn't open the compiler API for the --build option yet:

https://github.com/Microsoft/TypeScript/blob/fa74cef81e488c8e5bf790020620f0226118cb58/src/compiler/tsbuild.ts#L2

@sheetalkamat Is it OK to ask a question? Since you were the one to add the @internal flag. Is there a timeline for this? We would love to support projects being build with --build.

[nicojs]

Interesting issues:

• Create tsbuild public API and use incremental build in tsbuild --watch mode microsoft/TypeScript#28640
• ts-loader project references "build" support TypeStrong/ts-loader#851

[Djaler]

Hey, @nicojs. Looks like this was implemented - microsoft/TypeScript#31432

[nicojs]

Yep, looks like it. Not sure if it is already released though, I don't think so.

[nicojs]

It is released in 3.6: https://devblogs.microsoft.com/typescript/announcing-typescript-3-6/#apis-to-support-build-and-incremental

We can base our implementation on ts-loader: TypeStrong/ts-loader#935

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.