npm install reuses whatever the cache and an earlier run left behind and still
reports success, so a truncated cache entry produced a node_modules that was
missing typescript's lib/*.d.ts — the build then died with TS2318, every global
type undefined. npm ci starts from an empty tree and verifies each tarball
against the lockfile's integrity hash. Falls back to install when the copied
client has no usable lockfile.
nntrivi2001
dab01b7f2b