webpack-preprocessor

A webpack loader that strips or keeps code blocks based on preprocessor directives like `#if`, `#elif`, `#else`, `#endif`, supporting JavaScript and HTML files. It uses a declarative syntax similar to C preprocessor. Version 0.1.12 is the latest, but the project appears unmaintained (last commit years ago). Key differentiators: simple condition syntax, supports nested logic, and works with webpack 1/2 loaders. Alternatives like preprocess-loader or webpack-strip-block may be more modern.