prompt.js

A simple and flexible node.js prompt loader for OpenAI applications that supports both plain text and TOML formats.

Features

• Load prompts from .txt and .toml files
• Support for EJS templating for dynamic content
• Easy configuration of prompt directory

Installation

npm install --save @themaximalist/prompt.js

Usage

const prompt = require("@themaximalist/prompt.js");

// Configure prompt directory (optional)
prompt.configure({
    promptDir: join(__dirname, "path/to/prompts"),
});

// Load a plain text prompt
// > cat example1.txt
// Hello <%= name %>
const response = prompt.load("example1", { name: "The Maximalist" });
console.log(response); // Hello The Maximalist

// Load a TOML prompt
// > cat example2.toml
// <% for (const chat of chats) { %>
// [[messages]]
// role = "<%= chat.role %>"
// content = """
// <%- chat.content %>
// """
// <% } %>
const messages = prompt.load("example2", {
    chats: [
        { role: "user", content: "Hello, I am a user" },
        { role: "assistant", content: "Hi, how can I help you?" },
    ]
});
console.log(messages); // [{...}, {...}]

API

configure(options)

Configure the prompt loader with custom options.

• promptDir: A string representing the path to the directory containing the prompt files.

load(promptName, variables)

Load a prompt from a file and return the parsed content.

• promptName: A string representing the name of the prompt file (without the file extension).
• variables: An object containing variables to be used when parsing the prompt with EJS.

Error Handling

PromptError is an error class specific to this package, used when a prompt file cannot be found.

try {
    const message = prompt.load("nonexistent_prompt");
} catch (error) {
    if (error instanceof prompt.PromptError) {
        console.error("Prompt not found:", error.message);
    } else {
        throw error;
    }
}

Author

https://themaximalist.com

https://twitter.com/themaximal1st

License

This project is released under the MIT License.