TypeScript: quality assurance written into the code itself

TypeScript is JavaScript with a type system: every function declares what it accepts and returns, and mismatches are caught at compile time, before the application ever reaches a customer. Created by Microsoft and adopted across the industry, it has become the de facto standard for serious projects — including ours, where all new code is TypeScript by default. What your company gains concretely: fewer defects reported by users, safer future changes — the compiler flags every spot affected by a modification — and far easier handover to any future team, because the types document the code by themselves. The real cost is extra discipline while writing; on applications that live for years, it pays for itself many times over.