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tsc already has incremental mode, also there's the LSP, the bundler in watch mode could keep a persistent TS language server running. if the typecheck succeeds the bundler emits the new bundle, easy peasy.

If I remember correctly gulp(js) was perfectly able to do this.

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>easy peasy

but how do you do it? this is not as easy as it may seem. Of course it's possible but the value here is that I don't have to do this for every IDE and/or the LSP when I use webpack where waiting on the typecheck is an integrated feature.

I don't think that's an integrated feature of Webpack, though. It is a feature of TypeScript's own compiler (`tsc`), but that's about it. Nothing about Webpack supports typechecking (or TypeScript) natively.

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