fix(js): update detection of ts solution setup

[jaysoo]

Since we simplified tsconfig.base.json's compilerOptions to not include values that match defaults (as per Jake's feedback), the logic to detect TS solution setup should check that declaration is explicitly set to false, rather than that it is falsy.

Clean up PR: #29550

Current Behavior

We're not detecting TS solution setup correctly

Expected Behavior

Detection works

Related Issue(s)

Fixes #

[vercel]

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☁️ Nx Cloud last updated this comment at 2025-01-09 20:51:32 UTC