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TypeScript Programming Language

Technology and VendorsUpdated 13 Nov 2026

TypeScript is a programming language created by Microsoft and first released publicly in 2012, with Anders Hejlsberg, the designer of C#, among its lead developers. It is a superset of JavaScript, meaning any JavaScript program is also valid TypeScript, but it adds a system of types that lets developers state what kind of data each variable, function and object should hold. A compiler checks these declarations, a process known as type checking, and then converts the code into ordinary JavaScript that runs in web browsers or on servers using Node.js. Catching mismatches before code runs makes large projects easier to maintain. TypeScript has become one of the most widely used languages in web development and is open source. In fintech and crypto, it is common for building banking front ends, payment integrations, wallets and the libraries that applications use to talk to blockchains.

Last updated 13 Nov 2026