fix: More details for parsing errors during dashboard creation

Author: paveltiunov

packages/cubejs-server-core/dev/templates/SourceSnippet.js

@@ -25,12 +25,16 @@ class SourceSnippet {
   }
 
   static parse(source) {
-    return parse(source, {
-      sourceType: 'module',
-      plugins: [
-        "jsx"
-      ]
-    });
+    try {
+      return parse(source, {
+        sourceType: 'module',
+        plugins: [
+          "jsx"
+        ]
+      });
+    } catch (e) {
+      throw new Error(`Can't parse source snippet: ${e.message}\n${source}`);
+    }
   }
 
   mergeImport(targetSource, importDeclaration) {

packages/cubejs-server-core/dev/templates/TargetSource.js

@@ -10,13 +10,17 @@ class TargetSource {
   constructor(fileName, source) {
     this.source = source;
     this.fileName = fileName;
-    this.ast = parse(source, {
-      sourceFilename: fileName,
-      sourceType: 'module',
-      plugins: [
-        "jsx"
-      ]
-    });
+    try {
+      this.ast = parse(source, {
+        sourceFilename: fileName,
+        sourceType: 'module',
+        plugins: [
+          "jsx"
+        ]
+      });
+    } catch (e) {
+      throw new Error(`Can't parse ${fileName}: ${e.message}`);
+    }
     this.findAllImports();
     this.findAllDefinitions();
     this.findDefaultExport();