This repo is intended to demonstrate a bug found in esbuild. The externals config is not respected when stdin is used.
In the success case, the build succeeds when the app is referenced using the entryPoints config. However, if stdin.contents is used, esbuild fails.
# node v12.20.1
# install deps
$ yarn install
# build succeeds with entryPoints
$ node esbuild-entrypoints.js
# build fails with stdin
$ node esbuild-stdin.js
# ./app.jsx:2:29: error: Could not resolve "react" (mark it as external to exclude it from the bundle)
# ./app.jsx:3:30: error: Could not resolve "react-dom/server" (mark it as external to exclude it from the bundle)