Testing types in TypeScript is crucial for SDK and API developers to ensure predictable type inferences. Tools like `tsc`, `dtslint`, `tsd`, and `Vitest` can help catch errors early and guarantee type behavior.
Node.js EventEmitter can be made type-safe in TypeScript using declaration merging. This ensures correct event names and listener signatures, enhancing IDE and type checker reliability. Additional libraries like "typed-emitter" can further streamline the process.
Async generators in TypeScript can simplify handling user input in CLI tools. They yield values over time, making code cleaner and easier to follow. This approach can also be applied to various sources beyond CLI input.
As AI-generated code and LLM-integrated APIs become foundational in software development, traditional JSON Schema shows its limits. This article introduces JSON Structure, a modern, strongly typed schema language designed for the era of AI. We explore how it improves data modeling, supports clean code generation (especially for TypeScript), and enables AI systems to reason more accurately about structured output.
When using TypeScript with Node.js and ts-node, you might face "ERR_UNKNOWN_FILE_EXTENSION." To fix this, you have to use ts-node with specific commands for Node.js module loaders and ESM projects. Consider also alternatives like tsx and tsimp.