Issues with TypeScript-Go Integration in TypeScript-DOM-lib-generator

[Bashamega]

I have created a test PR on the TypeScript DOM Generator, here: microsoft/TypeScript-DOM-lib-generator#2104
I have found multiple recurring issues, with Typescript-Go:

node_modules/bcd-idl-mapper/index.d.ts:1:28 - error TS2307: Cannot find module '@mdn/browser-compat-data/types' or its corresponding type declarations.

1 import { Identifier } from "@mdn/browser-compat-data/types";
                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
node_modules/bcd-idl-mapper/index.d.ts:2:15 - error TS2307: Cannot find module '@mdn/browser-compat-data/types' or its corresponding type declarations.

2 export * from "@mdn/browser-compat-data/types";
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/build/bcd.ts:6:8 - error TS2307: Cannot find module '@mdn/browser-compat-data/types' or its corresponding type declarations.

6 } from "@mdn/browser-compat-data/types";
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/build/bcd/mapper.ts:2:3 - error TS2614: Module '"bcd-idl-mapper"' has no exported member 'BrowserName'. Did you mean to use 'import BrowserName from "bcd-idl-mapper"' instead?

2   BrowserName,
    ~~~~~~~~~~~
src/build/bcd/mapper.ts:3:3 - error TS2614: Module '"bcd-idl-mapper"' has no exported member 'CompatStatement'. Did you mean to use 'import CompatStatement from "bcd-idl-mapper"' instead?

3   CompatStatement,
    ~~~~~~~~~~~~~~~
src/build/bcd/mapper.ts:4:3 - error TS2614: Module '"bcd-idl-mapper"' has no exported member 'Identifier'. Did you mean to use 'import Identifier from "bcd-idl-mapper"' instead?

4   Identifier,
    ~~~~~~~~~~
src/build/bcd/mapper.ts:5:3 - error TS2614: Module '"bcd-idl-mapper"' has no exported member 'SimpleSupportStatement'. Did you mean to use 'import SimpleSupportStatement from "bcd-idl-mapper"' instead?

5   SimpleSupportStatement,
    ~~~~~~~~~~~~~~~~~~~~~~
src/build/bcd/stable.ts:1:40 - error TS2307: Cannot find module '@mdn/browser-compat-data/types' or its corresponding type declarations.

1 import { SimpleSupportStatement } from "@mdn/browser-compat-data/types";
                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Found 8 errors in 4 files.

The Issues are mainly with type declarations, and exported members
You can find the full report here:
https://github.com/Bashamega/TypeScript-DOM-lib-generator/actions/runs/16724919598/job/47337905310?pr=2104

[jakebailey]

The repo is still using outdated module settings; node is going away and maps to bundler:

https://github.com/microsoft/TypeScript-DOM-lib-generator/blob/22f04bb8ca0c72c9525a451bedcac15997cf39ec/tsconfig.json#L5

Try explicitly changing this to bundler, and you'll see the same errors in old tsc with plan npx tsc.

[jakebailey]

Seemingly, bcd-idl-mapper and so on are broken because @mdn/browser-compat-data/types does not exist, though I see the file in their repo. Somewhat confused given the package is not using export maps so I would have thought it would "just work". But tsc also dislikes it.

[Bashamega]

Thank you for your response @jakebailey
I will try to create a pr to the MDN library, updating it so it works