chore: add e2e test for cache_control (#67)

Author: louisgv

e2e/cache-control.test.ts

@@ -0,0 +1,74 @@
+import { createOpenRouter } from '@/src';
+import { streamText } from 'ai';
+import { it, vi } from 'vitest';
+
+vi.setConfig({
+  testTimeout: 42_000,
+});
+
+it('should trigger cache read', async () => {
+  // First call to warm the cache
+  await callLLM();
+  // Second call to test cache read
+  const response = await callLLM();
+  const providerMetadata = await response.providerMetadata;
+  expect(providerMetadata?.openrouter).toMatchObject({
+    usage: expect.objectContaining({
+      promptTokens: expect.any(Number),
+      completionTokens: expect.any(Number),
+      promptTokensDetails: expect.objectContaining({
+        cachedTokens: expect.any(Number),
+      }),
+      completionTokensDetails: expect.any(Object),
+      totalTokens: expect.any(Number),
+      cost: expect.any(Number),
+    }),
+  });
+
+  const cachedTokens = Number(
+    // @ts-ignore
+    providerMetadata?.openrouter?.usage?.promptTokensDetails?.cachedTokens,
+  );
+
+  expect(cachedTokens).toBeGreaterThan(0);
+});
+
+async function callLLM() {
+  const openrouter = createOpenRouter({
+    apiKey: process.env.OPENROUTER_API_KEY,
+    baseUrl: `${process.env.OPENROUTER_API_BASE}/api/v1`,
+  });
+  const model = openrouter('anthropic/claude-3.7-sonnet', {
+    usage: {
+      include: true,
+    },
+  });
+  const response = streamText({
+    model,
+    messages: [
+      {
+        role: 'user',
+        content: [
+          {
+            type: 'text',
+            text: 'a'.repeat(4200),
+            providerOptions: {
+              openrouter: {
+                cache_control: {
+                  type: 'ephemeral',
+                },
+              },
+            },
+          },
+          {
+            type: 'text',
+            text: 'How many "a" did I use in the previous message?',
+          },
+        ],
+      },
+    ],
+  });
+
+  await response.consumeStream();
+  return response;
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openrouter/ai-sdk-provider",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "license": "Apache-2.0",
   "sideEffects": false,
   "main": "./dist/index.js",
@@ -38,26 +38,27 @@
     }
   },
   "dependencies": {
-    "@ai-sdk/provider": "1.0.9",
-    "@ai-sdk/provider-utils": "2.1.10"
+    "@ai-sdk/provider": "1.1.3",
+    "@ai-sdk/provider-utils": "2.2.8"
   },
   "devDependencies": {
     "@biomejs/biome": "1.9.4",
-    "@ianvs/prettier-plugin-sort-imports": "4.4.1",
     "@edge-runtime/vm": "5.0.0",
+    "@ianvs/prettier-plugin-sort-imports": "4.4.2",
     "@types/jest": "29.5.14",
-    "@types/node": "22.13.5",
-    "ai": "4.1.46",
-    "tsup": "8.4.0",
-    "prettier": "3.5.2",
-    "typescript": "5.7.3",
-    "vitest": "3.0.7",
-    "vite-tsconfig-paths": "5.1.4",
+    "@types/node": "22.15.24",
+    "ai": "4.3.16",
     "dotenv": "16.5.0",
-    "zod": "3.24.2"
+    "prettier": "3.5.3",
+    "tsup": "8.5.0",
+    "typescript": "5.8.3",
+    "vite-tsconfig-paths": "5.1.4",
+    "vitest": "3.1.4",
+    "zod": "3.25.34"
   },
   "peerDependencies": {
-    "zod": "^3.0.0"
+    "zod": "^3.25.34",
+    "ai": "^4.3.16"
   },
   "engines": {
     "node": ">=18"