A Modern Quality Pipeline and Testing Strategy for Frontend Projects

Most of my frontend code is written by an agent now. I review it, nudge it, tighten the architecture. I don’t type most of it. That flips what a quality pipeline is for. Tests and types stop being something you write so the next developer who touches the code stays sane. They’re the contract the agent uses to check its own work. The more independent ways it can verify a change – types, lint, unit, component, real browser, a11y, bundle budget – the more of a ticket it can finish without me in the loop. Each green check is a signal it can act on; each red one is a hint about what to try next. Frontend has gotten a lot more complicated in the last year, too. SSR, streaming, partial prerendering, server components, edge runtimes. More places for a change to be silently wrong than there were a year ago. “TypeScript plus a couple of unit tests” doesn’t cover it anymore. A quality pipeline is the set of checks that run on every change – locally, on commit, and in CI – to give layered…