TS Congress

TypeScript Congress 2023

Do you ever find yourself pondering how to identify and address performance issues in TypeScript to maximize the effectiveness of your code? If so, join us for a talk on the performance of TypeScript and the techniques you can use to get the most out of your code. We'll delve into various ways to debug performance, explore how to leverage the power of the TypeScript compiler to detect potential performance issues and use the profiling tools available to track down the underlying bottlenecks.

TypeScript Performance: Going Beyond the Surface

Aleksandra Sikora

In this talk, we will explore the various issues encountered when building JavaScript CLIs, and demonstrate how TypeScript can address them and help us make our applications safer. By the end of this talk, you'll understand how to abstract runtime validations type behind easy-to-use interfaces, and have all the tools you need to bring those benefits into your own CLIs at little cost - whether they are open-source projects, or internal tools.

How to make our CLIs safer with types?

Maël Nison

ArkType is a new runtime validator for TypeScript and the first library with the goal of making type syntax available 1:1 in JS with no compilation step. It uses a carefully optimized static parser so that with each character you type, you'll see a list of completions, a clear ParseError, or your inferred type. At runtime, a simple definition like "string|number[]" will be transformed into a TypeNode that can be used to validate or transform inputs, compared to other TypeNodes, or combined with other definitions to form new TypeNodes. This talk will cover the process of building ArkType, with a focus on the type-level parser and runtime type system, and demo some of the most exciting features like scopes, index signatures and generics.

#runtime