Unexpected type errors

[adamzerner]

I am working on RFUI which is a component library intended to be available to React and Preact projects. Right now I'm using Preact, but eventually I want to figure out how to get it working for React as well.

Anyway, right now I want to publish to NPM. I followed the instructions in the "Setup" section, but I get a bunch of type errors. I've got this build-npm.ts script. When I run it, I get the following output (full output: output.txt):

code/rfui [master●] » deno run -A scripts/build-npm.ts 0.0.12
[dnt] Transforming...
[dnt] Running npm install...

added 3 packages, and audited 4 packages in 293ms

found 0 vulnerabilities
[dnt] Building project...
[dnt] Type checking ESM...
src/components/atoms/badge.tsx:1:37 - error TS2307: Cannot find module 'preact' or its corresponding type declarations.

1 import { ComponentChild, JSX } from "preact";
                                      ~~~~~~~~
src/components/atoms/badge.tsx:8:29 - error TS2304: Cannot find name 'HTMLDivElement'.

8 } & Omit<JSX.HTMLAttributes<HTMLDivElement>, "size">;
                              ~~~~~~~~~~~~~~
src/components/atoms/badge.tsx:8:29 - error TS4081: Exported type alias 'BadgeType' has or is using private name 'HTMLDivElement'.

8 } & Omit<JSX.HTMLAttributes<HTMLDivElement>, "size">;
                              ~~~~~~~~~~~~~~
src/components/atoms/badge.tsx:72:5 - error TS7026: JSX element implicitly has type 'any' because no interface 'JSX.IntrinsicElements' exists.

72     <div
       ~~~~
73       {...restWithoutClass}
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~
74       class={className}
   ~~~~~~~~~~~~~~~~~~~~~~~
75     >
   ~~~~~
src/components/atoms/badge.tsx:72:6 - error TS2304: Cannot find name 'React'.

72     <div
        ~~~
src/components/atoms/badge.tsx:77:5 - error TS7026: JSX element implicitly has type 'any' because no interface 'JSX.IntrinsicElements' exists.

I don't understand why this is. I am inside of a Fresh project. In that project, everything works fine. No type errors.

I'm also not clear on whether this matters or not. I see that you can ignore these type errors (amongst other stuff) if you want, but I don't understand what the implications are of doing so, and whether or not doing so would be wise.