❄️: fix non sourcemap build

Author: merryman

lively.freezer/src/bundler.js

@@ -137,19 +137,20 @@ export function bulletProofNamespaces (code, chunkFileName, isResurrectionBuild,
   let rewrites = [];
   let parsed = ast.parse(code, { withComments: true });
   const pureComments = parsed.allComments.filter(c => c.text === '#__PURE__');
-  if (pureComments.length === 0) return null;
-  parsed = ast.ReplaceVisitor.run(parsed, (node) => {
-    if (node.type === 'VariableDeclaration') {
-      const matchingComment = pureComments.find(c => node.start < c.start && c.end > node.end);
-      if (!matchingComment) return node;
-      const matchingGetter = node.declarations[0]?.init?.arguments?.[0]?.properties?.find(prop => prop.key.name === 'default' && prop.kind === 'get');
-      if (!matchingGetter) return node;
-      const getterBody = matchingGetter.value.body;
-      const [returnStmt] = getterBody.body;
-      rewrites.push([getterBody, `\nif (typeof ${returnStmt.argument.name} === 'undefined') throw new Error('Module not yet initialized!');\n`]);
-    }
-    return node;
-  });
+  if (pureComments.length > 0) {
+    ast.ReplaceVisitor.run(parsed, (node) => {
+      if (node.type === 'VariableDeclaration') {
+        const matchingComment = pureComments.find(c => node.start < c.start && c.end > node.end);
+        if (!matchingComment) return node;
+        const matchingGetter = node.declarations[0]?.init?.arguments?.[0]?.properties?.find(prop => prop.key.name === 'default' && prop.kind === 'get');
+        if (!matchingGetter) return node;
+        const getterBody = matchingGetter.value.body;
+        const [returnStmt] = getterBody.body;
+        rewrites.push([getterBody, `\nif (typeof ${returnStmt.argument.name} === 'undefined') throw new Error('Module not yet initialized!');\n`]);
+      }
+      return node;
+    });
+  }
   if (rewrites.length > 0) {
     arr.sortBy(rewrites, ([node]) => node.start).forEach(([node, snippet]) => {
       code = code.slice(0, node.start + 1) + snippet + code.slice(node.start + 1);
@@ -159,7 +160,7 @@ export function bulletProofNamespaces (code, chunkFileName, isResurrectionBuild,
     // this messes up the source map
     code = code.replace('System.register', `BootstrapSystem._currentFile = "${chunkFileName}";\nBootstrapSystem.register`);
   }
-  code = code.replace("'use strict'", "var __contextModule__ = typeof module !== 'undefined' ? module : arguments[1];\n");
+  code = code.replace("'use strict';", "var __contextModule__ = typeof module !== 'undefined' ? module : arguments[1];\n");
   return { code };
 }