feat: Prompt ChatGPT function

node/prompt-chatgpt/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
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+# Output of 'npm pack'
+*.tgz
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+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
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+.vuepress/dist
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+.temp
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+.yarn/install-state.gz
+.pnp.*

node/prompt-chatgpt/.prettierrc.json

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+{
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "semi": true,
+  "singleQuote": true
+}

node/prompt-chatgpt/README.md

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+# ⚡ OpenAI ChatGPT Function
+
+Query the OpenAI GPT-3.5-turbo model for chat completions.
+
+## 🧰 Usage
+
+### `GET`
+
+HTML form for interacting with the model.
+
+### `POST`
+
+Query the model for a completion.
+
+**Parameters**
+
+| Name | Description              | Location | Type   | Sample Value                  |
+| ---- | ------------------------ | -------- | ------ | ----------------------------- |
+| N/A  | Text to prompt the model | Body     | String | `Write a haiku about Mondays` |
+
+Sample `200` Response:
+
+Response from the model.
+
+```text
+Monday's heavy weight,
+Dawning with a sigh of grey,
+Hopeful hearts await.
+```
+
+Sample `400` Response:
+
+Response when the request body is missing.
+
+```
+Missing body with a prompt.
+```
+
+## ⚙️ Configuration
+
+| Setting           | Value         |
+| ----------------- | ------------- |
+| Runtime           | Node (18.0)   |
+| Entrypoint        | `src/main.js` |
+| Build Commands    | `npm install` |
+| Permissions       | `any`         |
+| Timeout (Seconds) | 15            |
+
+## 🔒 Environment Variables
+
+### OPENAI_API_KEY
+
+A unique key used to authenticate with the OpenAI API. Please note that this is a paid service and you will be charged for each request made to the API. For more information, see the [OpenAI pricing page](https://openai.com/pricing/).
+
+| Question      | Answer                                                                      |
+| ------------- | --------------------------------------------------------------------------- |
+| Required      | Yes                                                                         |
+| Sample Value  | `d1efb...aec35`                                                             |
+| Documentation | [OpenAI Docs](https://platform.openai.com/docs/quickstart/add-your-api-key) |
+
+### OPENAI_MAX_TOKENS
+
+The maximum number of tokens that the OpenAI response should contain. Be aware that OpenAI models read and write a maximum number of tokens per API call, which varies depending on the model. For GPT-3.5-turbo, the limit is 4096 tokens.
+
+| Question      | Answer                                                                                                        |
+| ------------- | ------------------------------------------------------------------------------------------------------------- |
+| Required      | No                                                                                                            |
+| Sample Value  | `512`                                                                                                         |
+| Documentation | [OpenAI: What are tokens?](https://help.openai.com/en/articles/4936856-what-are-tokens-and-how-to-count-them) |

node/prompt-chatgpt/package.json

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+{
+  "name": "prompt-chatgpt",
+  "version": "1.0.0",
+  "description": "",
+  "main": "src/main.js",
+  "type": "module",
+  "scripts": {
+    "format": "prettier --write ."
+  },
+  "keywords": [],
+  "dependencies": {
+    "openai": "^3.3.0"
+  },
+  "devDependencies": {
+    "prettier": "^3.0.0"
+  }
+}

node/prompt-chatgpt/src/environment.js

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+/**
+ * @param {string} key
+ * @return {string}
+ */
+function getRequiredEnv(key) {
+  const value = process.env[key];
+  if (value === undefined) {
+    throw new Error(`Environment variable ${key} is not set`);
+  }
+  return value;
+}
+
+/**
+ * @param {string} key
+ * @return {number | undefined}
+ */
+function getNumberEnv(key) {
+  const value = process.env[key];
+  if (value === undefined) {
+    return undefined;
+  }
+
+  try {
+    return parseInt(value);
+  } catch (e) {
+    throw new Error(`Environment variable ${key} is not a number`);
+  }
+}
+
+class EnvironmentService {
+  OPENAI_API_KEY = getRequiredEnv('OPENAI_API_KEY');
+  OPENAI_MAX_TOKENS = getNumberEnv('OPENAI_MAX_TOKENS') ?? 512;
+}
+
+export default EnvironmentService;