AST and code generation using current TypeScript version

[mfulton26]

How can I use the TypeScript source parser/compiler that is part of my installed deno version to parse a module, look for certain content, and then use that content to generate other source files?

e.g. I want to set up a little tool in my project to watch certain source files and when I make changes to them I want to parse the abstract syntax tree, find any function marked with export default, if there is one inspect its signature (specifically its name and its parameters but possibly its return type and/or comments too) and use that information to derive and generate other source files to automate some mechanical/mundane work in my project so that I don't have to create a bunch of files by hand that differ only by import paths and some TypeScript types.

I have tools I can reference for parsing (e.g. https://astexplorer.net/) and I'll figure out the transform part next but first I need to get access to the typescript module. Is there a way to use the one already part of deno or do I need to bring my own and maintain it myself by upgrading it whenever Deno upgrades, etc.

I did some investigating and it looks like dnt uses https://github.com/dsherret/ts-morph which appears to somehow compile/bundle its own version of the TypeScript compiler (here). I'd prefer to not need to grab typescript myself but use what's already available in deno but maybe I need to bring my own and figure out how to do that.

[bartlomieju]

How can I use the TypeScript source parser/compiler that is part of my installed deno version to parse a module, look for certain content, and then use that content to generate other source files?

The short answer is no - Deno doesn't expose TSC internals to users for programmatic access.

I did some investigating and it looks like dnt uses https://github.com/dsherret/ts-morph which appears to somehow compile/bundle its own version of the TypeScript compiler (here). I'd prefer to not need to grab typescript myself but use what's already available in deno but maybe I need to bring my own and figure out how to do that.

Using ts-morph or pulling typescript from a CDN is a preferred solution to the problem at hand.

[mfulton26]

Thanks!