Support & Feature request : Add ngc compile single file api for vite/snowpack

[xiaoxiangmoe]

I have wrote a POC demo for using vite with Angular: https://github.com/xiaoxiangmoe/vite-ng-app-demo
In demo, it combines ngc --watch and vite serve by concurrently.
If we want to write a vite-plugin-angular. We may need ngc to compile single file.related issue: angular/angular#37585 ， angular/angular#20422 (comment)

In the future, we may be able to provide functions such as hmr based on vite.
Moreover, we may be able to provide snowpack plugins based on the same API.

related issue: vitejs/vite#543

[alan-agius4]

Hi @xiaoxiangmoe,

Thanks for this feature request. We are following closely the development of ESBuild, Rollup, Webpack, snowpack and other build tools.

That being said, we are not planning to move away from Webpack yet. At least not in the near future. In fact currently we actively working on adding support for the next major version of Webpack.

Let’s continue tracking the single file emit angular/angular#37585.

[xiaoxiangmoe]

@alan-agius4 Can I raise some toolchain related questions in this issue?
For example：

• How can I access ngc API in third-party tools?
• Does ngc have rollup-plugin support?

[alan-agius4]

For such questions I think stackoverflow/Gitter is a better place.

Does ngc have rollup-plugin support?

There is no official ngc rollup plugin. But there a community plugin here: https://github.com/aelbore/rollup-plugin-ngc

How can I access ngc API in third-party tools?

The main methods are createProgram and createCompilerHost, these are used with the TypeScript API. You can take a look at the above plugin so see a usage.

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