diff --git a/packages/compiler/rollup.config.js b/packages/compiler/rollup.config.js
index 56a0519..59c94e2 100644
--- a/packages/compiler/rollup.config.js
+++ b/packages/compiler/rollup.config.js
@@ -11,6 +11,7 @@ function umd(insertion, extra) {
     file: distfile(insertion),
     format: 'umd',
     name: 'SyndicateCompiler',
+    sourcemap: true,
     ... (extra || {})
   };
 }
@@ -19,6 +20,7 @@ function es6(insertion, extra) {
   return {
     file: distfile('.es6' + insertion),
     format: 'es',
+    sourcemap: true,
     ... (extra || {})
   };
 }
diff --git a/packages/core/rollup.config.js b/packages/core/rollup.config.js
index 8084a2d..1c51e5a 100644
--- a/packages/core/rollup.config.js
+++ b/packages/core/rollup.config.js
@@ -11,6 +11,7 @@ function umd(insertion, extra) {
     file: distfile(insertion),
     format: 'umd',
     name: 'Syndicate',
+    sourcemap: true,
     globals: {
       'crypto': 'crypto',
     },
@@ -22,6 +23,7 @@ function es6(insertion, extra) {
   return {
     file: distfile('.es6' + insertion),
     format: 'es',
+    sourcemap: true,
     ... (extra || {})
   };
 }
diff --git a/packages/core/src/runtime/ground.ts b/packages/core/src/runtime/ground.ts
index 4aad3a0..d22d59b 100644
--- a/packages/core/src/runtime/ground.ts
+++ b/packages/core/src/runtime/ground.ts
@@ -118,11 +118,12 @@ export class Ground extends Dataspace {
   //   if (k) k(g);
   // }
 
-export function bootModule(bootProc: Script<void>): void {
+export function bootModule(bootProc: Script<void>): Ground {
     const g = new Ground(bootProc);
     if (typeof document !== 'undefined') {
         document.addEventListener('DOMContentLoaded', () => g.start());
     } else {
         g.start();
     }
+    return g;
 }
diff --git a/packages/syndicatec/examples/javascript/package.json b/packages/syndicatec/examples/javascript/package.json
index be3df28..768598a 100644
--- a/packages/syndicatec/examples/javascript/package.json
+++ b/packages/syndicatec/examples/javascript/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "prepare": "npm run compile",
-    "compile": "npx syndicatec -o index.js --module require index.syndicate.js",
+    "compile": "npx syndicatec -o index.js --module global --runtime Syndicate index.syndicate.js",
     "clean": "rm -f index.js"
   },
   "author": "Tony Garnock-Jones <tonyg@leastfixedpoint.com>",