feat(csv-loader): resolve @table references in type declarations

Update type generation to transform @table references into capitalized
type names when using custom schema strings. This ensures that
generated TypeScript types correctly reference other CSV modules.

src/csv-loader/tests/parseCsv-typeDeclarations.test.ts

@@ -286,6 +286,29 @@ describe("parseCsv - type declarations", () => {
       "readonly items: [Type; int][];",
     );
   });
+
+  it("should resolve @table references inside declared types to capitalized type names", () => {
+    const csv = [
+      "# type Entry = [@user]",
+      "id,entry",
+      "string,Entry",
+      "1,1",
+    ].join("\n");
+
+    const result = parseCsv(csv, {
+      emitTypes: true,
+      resourceName: "entries",
+      currentFilePath: path.join(fixturesDir, "entries.csv"),
+      resolveReferences: false,
+    });
+
+    expect(result.typeDefinition).toContain("export type Entry = [User]");
+    expect(result.typeDefinition).toContain("readonly entry: Entry;");
+    // It should also import the User type
+    expect(result.typeDefinition).toContain(
+      "import type { User } from './user.csv'",
+    );
+  });
 });
 
 describe("parseCsv - type declarations with resolveReferences: false", () => {

src/csv-loader/type-gen.ts

@@ -2,6 +2,21 @@ import * as path from "path";
 import { schemaToTypeString } from "../index.js";
 import type { PropertyConfig, TypeDeclaration } from "./types.js";
 
+function resolveReferencesInSchemaString(
+  schemaString: string,
+  resourceNames: Map<string, string>,
+): string {
+  return schemaString.replace(
+    /@([a-zA-Z0-9\-_]+)(\[\])?/g,
+    (_match, tableName, arraySuffix) => {
+      const typeName =
+        resourceNames.get(tableName) ||
+        tableName.charAt(0).toUpperCase() + tableName.slice(1);
+      return arraySuffix ? `${typeName}[]` : typeName;
+    },
+  );
+}
+
 /**
  * Generate TypeScript interface for the CSV data
  */
@@ -51,7 +66,7 @@ export function generateTypeDefinition(
       ? typeDeclarations
           .map(
             (decl) =>
-              `export type ${decl.name} = ${decl.schemaString ?? schemaToTypeString(decl.schema, resourceNames)};`,
+              `export type ${decl.name} = ${decl.schemaString ? resolveReferencesInSchemaString(decl.schemaString, resourceNames) : schemaToTypeString(decl.schema, resourceNames)};`,
           )
           .join("\n") + "\n\n"
       : "";
@@ -60,8 +75,9 @@ export function generateTypeDefinition(
     .map((config) => {
       const typeStr = config.declaredTypeName
         ? config.declaredTypeName
-        : (config.schemaString ??
-          schemaToTypeString(config.schema, resourceNames));
+        : config.schemaString
+          ? resolveReferencesInSchemaString(config.schemaString, resourceNames)
+          : schemaToTypeString(config.schema, resourceNames);
       return `    readonly ${config.name}: ${typeStr};`;
     })
     .join("\n");