Refactor all the things

plugs/editor/command.ts

@@ -0,0 +1,19 @@
+import { system } from "$sb/syscalls.ts";
+import { CompleteEvent } from "$sb/app_event.ts";
+
+export async function commandComplete(completeEvent: CompleteEvent) {
+  const match = /\{\[([^\]]*)$/.exec(completeEvent.linePrefix);
+
+  if (!match) {
+    return null;
+  }
+  const allCommands = await system.listCommands();
+
+  return {
+    from: completeEvent.pos - match[1].length,
+    options: Object.keys(allCommands).map((commandName) => ({
+      label: commandName,
+      type: "command",
+    })),
+  };
+}