Initial commit

templates/basic-chat.ts

@@ -0,0 +1,115 @@
+import Anthropic from '@anthropic-ai/sdk';
+
+// Initialize the client
+const anthropic = new Anthropic({
+  apiKey: process.env.ANTHROPIC_API_KEY || '',
+});
+
+async function basicChat() {
+  try {
+    const message = await anthropic.messages.create({
+      model: 'claude-sonnet-4-5-20250929',
+      max_tokens: 1024,
+      messages: [
+        {
+          role: 'user',
+          content: 'Hello, Claude! Tell me a fun fact about TypeScript.',
+        },
+      ],
+    });
+
+    // Extract text from response
+    const textContent = message.content.find(block => block.type === 'text');
+    if (textContent && textContent.type === 'text') {
+      console.log('Claude:', textContent.text);
+    }
+
+    // Log usage information
+    console.log('\nUsage:');
+    console.log('- Input tokens:', message.usage.input_tokens);
+    console.log('- Output tokens:', message.usage.output_tokens);
+  } catch (error) {
+    if (error instanceof Anthropic.APIError) {
+      console.error(`API Error [${error.status}]:`, error.message);
+    } else {
+      console.error('Unexpected error:', error);
+    }
+  }
+}
+
+// Multi-turn conversation example
+async function multiTurnChat() {
+  const messages: Array<{ role: 'user' | 'assistant'; content: string }> = [];
+
+  // First turn
+  messages.push({
+    role: 'user',
+    content: 'What is the capital of France?',
+  });
+
+  const response1 = await anthropic.messages.create({
+    model: 'claude-sonnet-4-5-20250929',
+    max_tokens: 1024,
+    messages,
+  });
+
+  const text1 = response1.content.find(b => b.type === 'text');
+  if (text1 && text1.type === 'text') {
+    messages.push({ role: 'assistant', content: text1.text });
+    console.log('Claude:', text1.text);
+  }
+
+  // Second turn
+  messages.push({
+    role: 'user',
+    content: 'What is its population?',
+  });
+
+  const response2 = await anthropic.messages.create({
+    model: 'claude-sonnet-4-5-20250929',
+    max_tokens: 1024,
+    messages,
+  });
+
+  const text2 = response2.content.find(b => b.type === 'text');
+  if (text2 && text2.type === 'text') {
+    console.log('Claude:', text2.text);
+  }
+}
+
+// System prompt example
+async function chatWithSystemPrompt() {
+  const message = await anthropic.messages.create({
+    model: 'claude-sonnet-4-5-20250929',
+    max_tokens: 1024,
+    system: 'You are a helpful Python coding assistant. Always provide type hints and docstrings.',
+    messages: [
+      {
+        role: 'user',
+        content: 'Write a function to calculate the factorial of a number.',
+      },
+    ],
+  });
+
+  const textContent = message.content.find(block => block.type === 'text');
+  if (textContent && textContent.type === 'text') {
+    console.log(textContent.text);
+  }
+}
+
+// Run examples
+if (require.main === module) {
+  console.log('=== Basic Chat ===\n');
+  basicChat()
+    .then(() => {
+      console.log('\n=== Multi-turn Chat ===\n');
+      return multiTurnChat();
+    })
+    .then(() => {
+      console.log('\n=== Chat with System Prompt ===\n');
+      return chatWithSystemPrompt();
+    })
+    .catch(console.error);
+}
+
+export { basicChat, multiTurnChat, chatWithSystemPrompt };