loom serve -> loom dev + minor improvements

platform/loom/cli/dev.ts

@@ -0,0 +1,56 @@
+import { buildCommand, numberParser } from "npm:@stricli/core";
+import express from 'npm:express';
+
+type Flags = {
+  readonly port: number;
+  readonly hostname: string;
+  readonly open: boolean;
+};
+
+export const command = buildCommand({
+  func: (flags: Flags, _text: string) => {
+    const port = flags.port;
+    const hostname = flags.hostname;
+    const open = flags.open;
+
+    const app = express();
+
+    app.use(express.static(import.meta.dirname + '/../editor/dist'));
+
+    app.listen(port, hostname, () => {
+      let url: string = `http://${hostname}:${port}`;
+      console.debug(`Express server running at ${url}`);
+
+      if (open) {
+        let o = (new Deno.Command("open", { args: [ url ]})).outputSync();
+        if (!o.success) {
+          console.error("Failed to open the server URL");
+        }
+      }
+    });
+  },
+  parameters: {
+    flags: {
+      port: {
+        brief: "Port to run the editor server on",
+        kind: "parsed",
+        parse: numberParser,
+        default: "8066"
+      },
+      hostname: {
+        brief: "Host to run the editor server on",
+        kind: "parsed",
+        parse: String,
+        default: "localhost"
+      },
+      open: {
+        brief: "Whether to open the server's URL",
+        kind: "boolean",
+        default: false
+      }
+    }
+  },
+  docs: {
+    brief: "Run an interactive editor server",
+  },
+});

platform/loom/mod.ts

@@ -1,9 +1,10 @@
 import { buildApplication, buildRouteMap, run } from 'npm:@stricli/core';
 import { command as serve } from './cli/serve.ts';
+import { command as dev } from './cli/dev.ts';
 import process from 'node:process';
 
 const root = buildRouteMap({
-  routes: { serve },
+  routes: { dev },
   docs: {
     brief: "Grimu-R weaving companion CLI"
   }