Anders Hejlsberg created TypeScript in 2012 to address the challenges of scaling JavaScript for large codebases. At first, he hoped to engage 25% of the JavaScript community, but by 2025, TypeScript had surged to the most-used language on GitHub, surpassing both JavaScript and Python. The 2025 Octoverse report highlighted over a million developers contributing to TypeScript, a 66% increase from the previous year. This rise reflects its integration into modern frameworks like React and Angular, resulting in safer and more maintainable code. TypeScript’s journey involved significant changes, including a complete rewrite of its compiler for better performance. Initially self-hosted, the team transitioned to Go, achieving a 10x performance boost while maintaining compatibility with previous versions. Hejlsberg emphasizes that this evolutionary approach fosters trust among developers. The article also notes how AI's increasing role in coding is driving developers toward typed languages like TypeScript, which offer reliability in AI-assisted workflows. TypeScript's static type system makes it easier for AI to generate code accurately. The landscape of development tools is shifting as AI takes on more responsibilities. IDEs are evolving into environments that accommodate AI agents, which require different functionalities than human developers. Hejlsberg highlights the need for structure in AI workflows to ensure they remain useful and do not stray from their intended purpose. TypeScript’s design principles focus on clarity and intent, making it a preferred choice for new developers, with over one joining GitHub every second in 2025.