feat(acp-ai-provider): add OpenCode ACP stream text example

Author: yaonyan

packages/acp-ai-provider/examples/opencode-stream-text.ts

@@ -0,0 +1,60 @@
+/**
+ * ACP Client AI Provider - OpenCode
+ *
+ * This example demonstrates how to stream text responses from OpenCode
+ * using ACP mode through the AI SDK.
+ *
+ * Prerequisites:
+ * - Install OpenCode CLI (if not already installed)
+ * - Run: opencode acp
+ *
+ * Run with:
+ * deno run --allow-all examples/opencode-stream-text.ts
+ * or
+ * npx tsx examples/opencode-stream-text.ts
+ */
+
+import { createACPProvider } from "../mod.ts";
+import { streamText } from "ai";
+import process from "node:process";
+import { logChunkToConsole } from "../src/utils.ts";
+
+async function main() {
+  // Create ACP provider for OpenCode
+  const provider = createACPProvider({
+    command: "opencode",
+    args: ["acp"],
+    env: {
+      ...(process.env as Record<string, string>),
+    },
+    session: {
+      cwd: process.cwd(),
+      mcpServers: [],
+    },
+  });
+
+  const prompt = process.env.PROMPT ??
+    "Run sleep 3 and then print 'Hello, OpenCode ACP!' to the console.";
+
+  console.log({ prompt });
+
+  const model = provider.languageModel();
+  const { toolCalls } = streamText({
+    model,
+    prompt,
+    tools: provider.tools,
+    onChunk: (arg: any) => {
+      const { chunk } = arg;
+      logChunkToConsole(chunk);
+    },
+  });
+
+  console.log(
+    `Tool Calls: ${(await toolCalls).map((t: any) => t.toolName).join(", ")}`,
+  );
+}
+
+main().catch((error) => {
+  console.error("❌ Error:", error);
+  process.exit(1);
+});