Support TypeScript Project

[jellydn]

Hi there,

I've checked the source code and that Deta Micro only supports index.js.

https://github.com/deta/deta-cli/blob/master/runtime/manager.go#L50-L54

Could we support index.ts or something else like server.ts or even more customized in the future? Thank you very much.

[abdelhai]

hi, this is a limitation of our current runtime, not the cli. we're working on a new runtime with the aim to support TS.

[HanzCEO]

In the meantime, users could precompile their ts project before pushing to Deta.

Or, use npm scripts like postinstall or build.

[ngdangtu-vn]

In my project, my repo structure separates ts code (as /src) and js code (as /server). And the thing is I usually remove all the /server dir. The Deta CLI always put their own dir in the same level of entrypoint which I think that I have to do deta new all the time which I do not like it.

[abdelhai]

you can copy the .deta dir or keep it somewhere. deta new creates a new micro, which is not what you should want. you could always do deta clone... to get a specific .deta dir.

sorry for the messy workaround, but we're working on supporting more complex project structures atm.

[ArnabXD]

In the meantime, users could precompile their ts project before pushing to Deta.

Or, use npm scripts like postinstall or build.

@HanzCEO can you share a valid tsconfig ? Because I have tried this long ago and the transpiled js code doesn't work as expected. throwing errors for things like optional chaining.

[bogdaaamn]

This is the one I use with tsc: deta-typescript-express-starter/tsconfig.json

[AndreWohnsland]

Any updates on this topic? I also stumbled on this issue, because I am currently in the process of migrating one of my dyno from heroku to deta. Usually after pushing a change, my postinstall just compiles the ts and everything is defined in the package.json, but for deta there is some workaround necessary to make it work (similar as describe by others). Would love to be able to use .ts files and jsut the defined pipeline for compiling on the run.

[bogdaaamn]

Same problem here but I managed to make it work with tsc.

I made a little deta-typescript-express-starter template, following it, I write all the Typescript in src/ and compile it all in dist/. Then I import dist/index.js into index.js and export it and it's all picked up by Deta, check index.js. This is the most simple tsconfig.json.

I guess the easiest solution is to compile all the .ts files into index.js, but I didn't manage to make requireJS work for some reason so I did it a bit messier, but I will find the solution one day 😂