Typescript

TypeScript is an open-source pro­gram­ming lan­guage de­vel­oped and main­tained by Microsoft. It is a strict syn­tac­ti­cal su­per­set of JavaScript, and adds op­tional sta­tic typ­ing to the lan­guage. TypeScript is de­signed for de­vel­op­ment of large ap­pli­ca­tions and transcom­piles to JavaScript. Text from Wikipedia

Projects built with Typescript: