[liviaUeno]

Summary

Fixes the 4 remaining tsc errors reported by the TypeScript job, all of them inside matrix-js-sdk.

Add @matrix-org/matrix-sdk-crypto-wasm@^18.3.1 (the version range the pinned SDK asks for) as a devDependency of apps/web. The change is one line in apps/web/package.json and six lines in pnpm-lock.yaml. No source code changes.

Root cause

apps/web/tsconfig.json includes ./node_modules/matrix-js-sdk/src/@types/*.d.ts through the symlinked path. That declaration file does import type * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm".

Because the file is read through apps/web/node_modules, TypeScript resolves that import from apps/web. pnpm only links an app's direct dependencies there, and @matrix-org/matrix-sdk-crypto-wasm is only a dependency of the SDK, so it is not visible and tsc fails with TS2307: Cannot find module. The three other errors in MSC4108SignInWithQR.ts (TS2312, TS2698, TS2322) follow from it, because the types from that package become unknown.

Things that were ruled out: the package is installed (18.3.1), it is linked into the SDK's own folder, and moduleResolution is already bundler.

Verification

• tsc --noEmit in apps/web: 4 errors before, 0 after.
• pnpm -r --workspace-concurrency=1 lint:types (the command the CI uses) passes.

Notes

• This branch is based on fix-remove-layered-build-step (the SDK pin, ci: pin matrix-js-sdk to lockfile commit to avoid layered.sh clone #24), since the pin is what exposed the problem. It should be merged together with or after ci: pin matrix-js-sdk to lockfile commit to avoid layered.sh clone #24.
• Also fixes item 3b from the ci: pin matrix-js-sdk to lockfile commit to avoid layered.sh clone #24 review (the dead olm include in apps/web/playwright/tsconfig.json). Instead of resolving olm's types by package name, I removed the line: olm is not installed at all with the pinned SDK (node_modules/.pnpm has no olm package) and tsc -p playwright/tsconfig.json reports 0 errors before and after, so nothing needs those types. Happy to switch to the paths/types approach if you prefer.