stub out webapp & Set up a go skeleton that works with the underlying FE js

web/rollup.config.js

@@ -0,0 +1,88 @@
+import svelte from "rollup-plugin-svelte"
+import resolve from "@rollup/plugin-node-resolve"
+import commonjs from "@rollup/plugin-commonjs"
+import livereload from "rollup-plugin-livereload"
+import { terser } from "rollup-plugin-terser"
+import sveltePreprocess from "svelte-preprocess"
+import typescript from "@rollup/plugin-typescript"
+
+const production = !process.env.ROLLUP_WATCH
+const do_serve = !process.env.SKIP_SERVE
+
+function serve() {
+    let server
+
+    function toExit() {
+        if (server) server.kill(0)
+    }
+
+    return {
+        writeBundle() {
+            if (server) return
+            server = require("child_process").spawn("yarn", ["run", "start", "--", "--dev"], {
+                stdio: ["ignore", "inherit", "inherit"],
+                shell: true,
+            })
+
+            process.on("SIGTERM", toExit)
+            process.on("exit", toExit)
+        },
+    }
+}
+
+export default {
+    input: "src/main.ts",
+    output: {
+        sourcemap: true,
+        format: "iife",
+        name: "app",
+        file: "public/build/bundle.js",
+    },
+    plugins: [
+        svelte({
+            // enable run-time checks when not in production
+            dev: !production,
+            // we'll extract any component CSS out into
+            // a separate file - better for performance
+            css: (css) => {
+                css.write("public/build/bundle.css")
+            },
+            preprocess: sveltePreprocess({
+                postcss: true,
+                scss: {
+                    includePaths: ["src"],
+                    postcss: {
+                        plugins: [require("autoprefixer")],
+                    },
+                },
+            }),
+        }),
+
+        // If you have external dependencies installed from
+        // npm, you'll most likely need these plugins. In
+        // some cases you'll need additional configuration -
+        // consult the documentation for details:
+        // https://github.com/rollup/plugins/tree/master/packages/commonjs
+        resolve({
+            browser: true,
+            dedupe: ["svelte"],
+        }),
+        commonjs(),
+        typescript({ sourceMap: !production }),
+
+        // In dev mode, call `npm run start` once
+        // the bundle has been generated
+        !production && do_serve && serve(),
+
+        // Watch the `public` directory and refresh the
+        // browser on changes when not in production
+        !production && livereload("public"),
+
+        // If we're building for production (npm run build
+        // instead of npm run dev), minify
+        production && terser(),
+    ],
+    watch: {
+        clearScreen: false,
+    },
+}