feat: make eval-ed compiler debuggable (#522)

* feat: make eval-ed compiler debuggable

* changeset

Author: gtm-nayan

.changeset/lazy-kids-brush.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/repl': patch
+---
+
+feat: make eval-ed compiler debuggable

packages/repl/src/lib/workers/bundler/index.js

@@ -42,7 +42,7 @@ self.addEventListener(
 					// unpkg doesn't set the correct MIME type for .cjs files
 					// https://github.com/mjackson/unpkg/issues/355
 					const compiler = await fetch(`${svelte_url}/compiler.cjs`).then((r) => r.text());
-					(0, eval)(compiler);
+					(0, eval)(compiler + '\n//# sourceURL=compiler.cjs@' + version);
 				} else {
 					try {
 						importScripts(`${svelte_url}/compiler.js`);

packages/repl/src/lib/workers/compiler/index.js

@@ -24,7 +24,7 @@ self.addEventListener(
 					// unpkg doesn't set the correct MIME type for .cjs files
 					// https://github.com/mjackson/unpkg/issues/355
 					const compiler = await fetch(`${svelte_url}/compiler.cjs`).then((r) => r.text());
-					(0, eval)(compiler);
+					(0, eval)(compiler + '\n//# sourceURL=compiler.cjs@' + version);
 				} else {
 					try {
 						importScripts(`${svelte_url}/compiler.js`);