Add stripped down prompt application example

js/packages/phoenix-client/examples/apply_prompt.ts

@@ -0,0 +1,58 @@
+/* eslint-disable no-console */
+import { createClient, getPrompt, toSDK } from "../src";
+import OpenAI from "openai";
+
+const PROMPT_NAME = process.env.PROMPT_NAME!;
+const OPENAI_API_KEY = process.env.OPENAI_API_KEY!;
+
+// get first argument from command line
+const question = process.argv[2];
+
+if (!question) {
+  throw new Error(
+    "Usage: pnpx tsx examples/apply_prompt.ts 'What is the capital of France?'\nAssumes that the prompt has a variable named 'question'\nAssumes that the prompt is openai with an openai model"
+  );
+}
+
+if (!OPENAI_API_KEY) {
+  throw new Error("OPENAI_API_KEY must be provided in the environment");
+}
+
+const client = createClient({
+  options: {
+    baseUrl: "http://localhost:6006",
+  },
+});
+
+const openai = new OpenAI({
+  apiKey: OPENAI_API_KEY,
+  baseURL: "http://m4-mini:11434/v1",
+});
+
+const main = async () => {
+  const prompt = await getPrompt({
+    client,
+    prompt: { name: PROMPT_NAME },
+  });
+
+  const openAIParams = toSDK({
+    prompt,
+    sdk: "openai",
+    variables: {
+      question,
+    },
+  });
+
+  if (!openAIParams) {
+    throw new Error("Prompt could not be converted to OpenAI params");
+  }
+
+  const response = await openai.chat.completions.create({
+    ...openAIParams,
+    stream: false,
+  });
+
+  console.log(response.choices[0]?.message.content);
+};
+
+main();