Cracking the TypeScript TS2339 Puzzle: Why My Vue ref Became the `never` Type

Ever encountered the tricky `Property '...' does not exist on type 'never'` (TS2339) error in your Vue.js and TypeScript project? This often happens when working with refs for DOM elements and performing conditional checks. This article from the DP@lib00 team dives deep into the root cause, explaining how TypeScript's Control Flow Analysis leads to this issue by inferring the `never` type from a logical contradiction. We provide two practical solutions—logic restructuring and type assertion—to help you escape this type inference trap for good.