fix: pass $ to type transformer

Author: mrlubos

.changeset/two-cameras-check.md

@@ -2,4 +2,4 @@
 "@hey-api/openapi-ts": patch
 ---
 
-**plugin(@hey-api/transformers)**: expose plugin in transformer function context
+**plugin(@hey-api/transformers)**: expose `plugin` and `$` in transformer function context

dev/typescript/presets.ts

@@ -16,7 +16,9 @@ export const presets = {
       name: '@hey-api/sdk',
       paramsStructure: 'flat',
     },
-    '@hey-api/transformers',
+    {
+      name: '@hey-api/transformers',
+    },
     {
       metadata: true,
       name: 'zod',

packages/openapi-ts/src/plugins/@hey-api/transformers/plugin.ts

@@ -265,6 +265,7 @@ function processSchemaType({
 
   for (const transformer of plugin.config.transformers) {
     const t = transformer({
+      $,
       config: plugin.config,
       dataExpression,
       plugin,

packages/openapi-ts/src/plugins/@hey-api/transformers/types.ts

@@ -2,9 +2,9 @@ import type { IR } from '@hey-api/shared';
 import type { DefinePlugin, Plugin } from '@hey-api/shared';
 import type ts from 'typescript';
 
-import type { $, MaybeTsDsl, TsDsl } from '../../../ts-dsl';
+import type { $, DollarTsDsl, MaybeTsDsl, TsDsl } from '../../../ts-dsl';
 
-interface BaseTransformer {
+interface BaseTransformer extends DollarTsDsl {
   plugin: HeyApiTransformersPlugin['Instance'];
   schema: IR.SchemaObject;
 }

packages/openapi-ts/src/plugins/@hey-api/typescript/v1/walker.ts

@@ -94,7 +94,7 @@ export function createVisitor(
       const transformersPlugin = ctx.plugin.getPlugin('@hey-api/transformers');
       if (transformersPlugin?.config.typeTransformers) {
         for (const typeTransformer of transformersPlugin.config.typeTransformers) {
-          const typeNode = typeTransformer({ plugin: transformersPlugin, schema });
+          const typeNode = typeTransformer({ $, plugin: transformersPlugin, schema });
           if (typeNode) {
             return { meta: defaultMeta(schema), type: typeNode };
           }