Rollup for proper CLI

cli/lib/json-plugin.js

@@ -0,0 +1,33 @@
+import {promises as fsp} from "fs";
+
+const prefix = "json:";
+
+export default function ejsAssetPlugin() {
+  return {
+    name: "json-plugin",
+    async resolveId(id, importer) {
+      if (!id.startsWith(prefix)) return;
+      const realId = id.slice(prefix.length);
+      const resolveResult = await this.resolve(realId, importer);
+
+      if (!resolveResult) {
+        throw Error(`Cannot find ${realId}`);
+      }
+      // Add an additional .js to the end so it ends up with .js at the end in the _virtual folder.
+      return prefix + resolveResult.id;
+    },
+    async load(id) {
+      if (!id.startsWith(prefix)) return;
+      const realId = id.slice(prefix.length);
+      const source = await fsp.readFile(realId, "utf8");
+
+	  let code = "";
+		for(const [key, value] of Object.entries(JSON.parse(source))) {
+			code += `
+				export const ${key} = ${JSON.stringify(value)};
+			`
+		}
+		return code;
+    },
+  };
+}