TypeScript
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Adopt
We prefer TypeScript to JavaScript. Our decision in more detail:
In the context of creating user-interfaces with React and back-end applications using Node.js, facing the proliferation of different languages used within INFO and the engineering communities at large we decided for TypeScript as the preferred language in favor of JavaScript and neglected Flow and others languages, to achieve a common way of working that will allow software engineers to work on or maintain multiple code bases over multiple projects, accepting limiting the options for teams and individual engineers to select their tools.