This article details creating an ETL pipeline using TypeScript to gather data from the OpenWeatherMap API and COVID-19 statistics from a GitHub CSV, transforming it, and loading it into PostgreSQL via Prisma. It emphasizes TypeScript's advantages like type safety, reducing runtime errors, and enhancing API interaction clarity. Automating the workflow with node-cron allows seamless execution. The article also presents a project structure and essential configurations for TypeScript, making it easy for developers to set up an efficient and robust ETL process.
TypeScript’s design enforces type safety from the start of the ETL process, reducing runtime errors from unexpected data types.
By ensuring data adheres to defined structures, TypeScript helps minimize debugging surprises typical in dynamically typed languages like Python.
Utilizing async/await syntax in TypeScript leads to clearer interactions with APIs and improves error handling in the ETL workflow.
The article emphasizes that combining multiple APIs with TypeScript allows for compile-time checks, ensuring maintainability through predictable refactoring.
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