Alessia smiles. She knows the backend can change. She knows the network lies. She knows that trust is not a type. Architecture rots from the top down but fails from the bottom up. A missing readonly here, a mutable export there—these are the cracks through which runtime exceptions flood. Alessia loves not the glory of new features but the invisible labor of structural integrity .

Alessia insists: "If you cannot parse it, you cannot trust it." Pure-TS codebases prefer libraries that ship first-party TypeScript types (not @types/ ). Even better: libraries written entirely in TypeScript with isolatedModules compatibility.

"rules": "@typescript-eslint/no-explicit-any": "error", "@typescript-eslint/ban-ts-comment": "error"

But ask any CTO who has faced a production meltdown due to a type mismatch. Ask the on-call engineer woken at 3 AM because undefined is not an object . They will tell you: "I wish we had an Alessia. I wish someone had loved the architecture enough to save it from us." Every any is a debt. Every @ts-ignore is a compound interest loan. Alessia pays down that debt early, not because it is glamorous, but because she loves the architecture more than she loves the feature.