functional_enrichment_app

Code for a toy shiny app that calculates functional enrichment, and allows interactive tweaking of gene list sizes, gene pathway list sizes e.t.c.

You can play with it here: https://monashbioinformaticsplatform.github.io/functional_enrichment_app/

Building a static (shinylive) version

This app can be exported to a static, serverless site using shinylive — it compiles to WebAssembly and runs entirely in the browser via webR, so the exported site/ directory can be hosted on any plain static file server (e.g. GitHub Pages) with no Shiny server running anywhere.

1. Install R and the shinylive package:

   install.packages("shinylive", repos = "https://cloud.r-project.org")

2. Make sure every package the app uses (shiny, eulerr, scales) is also installed locally — shinylive::export() determines what to bundle by inspecting locally installed packages, so they need to be present first:

   install.packages(c("eulerr", "scales"), repos = "https://cloud.r-project.org")

3. Export the app to a site/ directory:

   Rscript -e 'shinylive::export(appdir = ".", destdir = "site")'

4. Serve it locally to test, then open the printed URL in a browser:

   cd site && python3 -m http.server 8791

   First load is slow — webR and the bundled R packages need to download and initialize in the browser, which can take 10-30+ seconds.

This repo also has a GitHub Actions workflow (.github/workflows/deploy-shinylive.yml) that runs this same export automatically and publishes the result to GitHub Pages on every push to master.