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TypeScript is a tool that adds static typing to JavaScript, which by default is a language that has dynamic typing, that is, variables and functions can assume different types during runtime. In this video we build an application using TypeScript, Sucrase, ESLint, Express, MongoDB, Mongoose and other tools. Post about TypeScript: https://blog.rocketseat.com.br/typesc... Project code: https://github.com/Rocketseat/youtube... Blog post: https://blog.rocketseat.com.br/typesc... ----- Follow Rocketseat on social media: Website: https://www.rocketseat.com.br Twitter: / rocketseat Facebook: / rocketseat Instagram: / rocketseat_oficial Community: http://comunidade.rocketseat.com.br Blog: https://rocketseat.com.br/blog