Move a lot of shell stuff over to Node so that Windows users need not install git bash.

run-command.mjs

@@ -0,0 +1,75 @@
+import { readFile, writeFile, unlink, mkdir, rm } from 'node:fs/promises';
+import { exec, fork } from 'node:child_process';
+import { fileURLToPath } from 'node:url';
+import { build } from 'esbuild';
+
+const config = Object.freeze(JSON.parse(await readFile(new URL("./src/config.json", import.meta.url))));
+
+const serverUrl = (base => {
+  try {
+    base = new URL(config.host);
+  } catch (e) {
+    base = new URL("http://a");
+    base.host = config.host;
+  }
+  base.port = process.env.PORT || config.port;
+  return Object.freeze(base);
+})();
+
+const shutdown = new URL("./src/.shutdown", import.meta.url);
+
+for(let i = 2; i < process.argv.length; i++)
+  switch (process.argv[i]) {
+    case "start": {
+      if (config.production)
+        exec("npm run pm2-start", (error, stdout) => {
+            if (error) throw error;
+            console.log(stdout);
+        });
+      else {
+        const server = fork(
+          new URL("./backend.js", import.meta.url),
+          {detached: true}
+        );
+        server.unref();
+        server.disconnect();
+      }
+      break;
+    }
+
+    case "stop":
+      await writeFile(shutdown, "");
+      try {await fetch(new URL("/test-shutdown", serverUrl))}
+      catch (e) {await unlink(shutdown)}
+      if (config.production)
+        exec("npm run pm2-stop", (error, stdout) => {
+          if (error) throw error;
+          console.log(stdout);
+        });
+      break;
+
+    case "build": {
+      const dist = fileURLToPath(new URL("./views/dist", import.meta.url));
+      await rm(dist, {force: true, recursive: true});
+      await mkdir(dist);
+      await build({
+        entryPoints: [
+          "./views/uv/**/*.js",
+          "./views/assets/js/**/*.js",
+          "./views/assets/css/**/*.css"
+        ],
+        platform: "browser",
+        sourcemap: true,
+        bundle: true,
+        minify: true,
+        external: ["*.png", "*.jpg", "*.jpeg", "*.webp", "*.svg"],
+        outdir: dist
+      });
+      break;
+    }
+
+//  No default case.
+  }
+
+
+process.exitCode = 0;