JavaScript
Migration complexity when converting large JavaScript codebases to TypeScript
7Migrating large JavaScript projects to TypeScript requires careful planning and resources. Attempting 100% perfect types from day one causes delays, while the overhead of compilation time, build steps, and complex configurations frustrates teams transitioning from pure JavaScript.
Runtime errors in large JavaScript backend systems due to lack of type enforcement
7Pure JavaScript in large-scale backend systems allows functions to receive unexpected parameters without enforcement, leading to hidden bugs that are difficult to refactor safely. Consistency across large codebases with hundreds of thousands of lines becomes challenging without static typing.
TypeScript does not provide the type safety it claims to offer
6TypeScript's type system provides a false sense of security. The transpiler cannot truly know type information due to JavaScript's dynamic nature, and empirical research shows TypeScript code contains equal or more bugs than JavaScript code, with longer bug fix times.