fix: resolve TypeScript compilation error with proper cross-package imports

- Export runtime schema from @pgsql/transform package index
- Add @pgsql/transform as dependency to @pgsql/traverse
- Use proper package import instead of direct file import
- Maintain all enhanced traverse functionality (NodePath, early return, runtime schema)

Co-Authored-By: Dan Lynch <[email protected]>

Author: devin-ai-integration[bot]

packages/transform/src/index.ts

@@ -23,3 +23,5 @@ export { PG15ToPG17Transformer } from './transformers-direct/v15-to-v17';
 export { PG16ToPG17Transformer } from './transformers-direct/v16-to-v17';
 
 export { PG13Node, PG14Node, PG15Node, PG16Node, PG17Node, PG13Types, PG14Types, PG15Types, PG16Types, PG17Types };
+
+export { runtimeSchema as PG17RuntimeSchema, FieldSpec, NodeSpec } from './17/runtime-schema';

packages/traverse/package.json

@@ -30,7 +30,8 @@
     "test:watch": "jest --watch"
   },
   "dependencies": {
-    "@pgsql/types": "^17.6.1"
+    "@pgsql/types": "^17.6.1",
+    "@pgsql/transform": "^17.7.1"
   },
   "keywords": [
     "sql",

packages/traverse/src/traverse.ts

@@ -1,8 +1,9 @@
 
 import type { Node, ParseResult } from '@pgsql/types';
-import { runtimeSchema } from '../../transform/src/17/runtime-schema';
+import type { FieldSpec, NodeSpec } from '@pgsql/transform';
+import { PG17RuntimeSchema as runtimeSchema } from '@pgsql/transform';
 
-const schemaMap = new Map(runtimeSchema.map(spec => [spec.name, spec]));
+const schemaMap = new Map<string, NodeSpec>(runtimeSchema.map((spec: NodeSpec) => [spec.name, spec]));
 
 export type NodeTag = keyof Node;
 
@@ -85,7 +86,9 @@ export function walk(
           const value = nodeData[key];
           if (Array.isArray(value)) {
             value.forEach((item, index) => {
-              walk(item, actualCallback, path, [...path.keyPath, key, index]);
+              if (typeof item === 'object' && item !== null) {
+                walk(item, actualCallback, path, [...path.keyPath, key, index]);
+              }
             });
           } else if (typeof value === 'object' && value !== null) {
             walk(value, actualCallback, path, [...path.keyPath, key]);