fix(core): fix bug caused by iterating over empty ast object

.changeset/metal-crews-yell.md

@@ -0,0 +1,5 @@
+---
+'@chugsplash/core': patch
+---
+
+Fix bug caused by iterating over empty AST node object

packages/core/src/languages/solidity/compiler.ts

@@ -259,10 +259,12 @@ export const mapContractAstIdsToSourceNames = (
   outputSources: CompilerOutputSources
 ): { [astId: number]: string } => {
   const contractAstIdsToSourceNames: { [astId: number]: string } = {}
-  for (const [sourceName, { ast }] of Object.entries(outputSources) as any) {
-    for (const node of ast.nodes) {
-      if (node.name !== undefined) {
-        contractAstIdsToSourceNames[node.id] = sourceName
+  for (const [sourceName, { ast }] of Object.entries(outputSources)) {
+    if (ast.nodes !== undefined) {
+      for (const node of ast.nodes) {
+        if (node.name !== undefined) {
+          contractAstIdsToSourceNames[node.id] = sourceName
+        }
       }
     }
   }

packages/core/src/languages/solidity/types.ts

@@ -99,6 +99,7 @@ export interface CompilerOutputSource {
   ast: {
     id: number
     exportedSymbols: { [contractName: string]: number[] }
+    nodes?: any
   }
 }