Internals: How Kotlin 2.0 Compiles to JavaScript 2.0 with Kotlin/JS and Webpack 5.90

Kotlin 2.0 solidifies the language’s multiplatform capabilities, with Kotlin/JS receiving major updates to its compilation pipeline. This article dives into the internal workings of how Kotlin 2.0 source code is transformed into modern JavaScript 2.0 output, integrated with Webpack 5.90 for production-ready bundling.

Kotlin 2.0 Compilation Pipeline Overview

All Kotlin 2.0 targets, including JS, use the unified IR (Intermediate Representation) backend, replacing the deprecated legacy compiler.…