Why TypeScript Is Eating JavaScript in 2026

In this episode of The Programming Languages Podcast, Lucas and Luna explore how TypeScript has become the dominant language for web development by June 2026, surpassing JavaScript in enterprise adoption. They break down why TypeScript's type system saves teams from costly runtime errors, how Microsoft's strategy of gradual adoption won over developers, and why even die-hard JavaScript fans are making the switch. With the rise of AI coding assistants that generate TypeScript by default, the language's popularity shows no signs of slowing. Lucas shares data on TypeScript's 40% year-over-year growth in package downloads and its impact on developer productivity, while Luna questions whether TypeScript adds unnecessary complexity for small projects. The hosts also discuss the role of Deno and Bun in the TypeScript ecosystem, and why TypeScript is now the default for new React and Node.js projects. A must-listen for any web developer wondering whether to make the jump.

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