TypeScript 6.x.x bump #974

TypeScript 6.0 Build Failure Analysis

The build is failing across all Node matrix versions (18.x, 20.x, 22.x) with two deprecation errors that TypeScript 6.0 now treats as hard errors:

Error 1: TS5107 — moduleResolution=node10 is deprecated

• Source: Root tsconfig.json → "moduleResolution": "Node"
• Inherited by: Every workspace package via packages/tsconfig.base.json
• Fix: Update to "moduleResolution": "Node16" or "Bundler" in tsconfig.json

Error 2: TS5101 — baseUrl is deprecated

• Source: Each workspace package's own tsconfig.json (e.g. packages/msgraph-sdk-users/tsconfig.json)
• Current value: "baseUrl": "./" (used alongside paths for project references)
• Fix: Remove baseUrl from all ~68 workspace tsconfigs. With moduleResolution: "Node16" or "Bundler", TypeScript resolves paths relative to the tsconfig location by default.

Recommended Changes

Option A — Proper migration (recommended):

1. In tsconfig.json: change "moduleResolution": "Node" → "moduleResolution": "Node16" and "module": "ES6" → "module": "Node16"
2. In all packages/*/tsconfig.json: remove the "baseUrl": "./" line
3. Also consider removing "experimentalDecorators" and "emitDecoratorMetadata" from packages/tsconfig.base.json since these are deprecated in TS6 as well (TC39 decorators are now standard)

Option B — Quick unblock (temporary):
Add "ignoreDeprecations": "6.0" to the root tsconfig.json compilerOptions to suppress the errors. This buys time but the options will be removed in TypeScript 7.0.

Note: The baseUrl deprecation affects all ~68 workspace packages that follow the same tsconfig pattern. A script or bulk find-and-replace would be the most efficient approach for Option A.