Json-format-converter NPM

JSON Format Converter

A Node.js package that converts JSON data to various formats including CSV and PDF. Provides both direct conversion methods and a REST API server.

Installation

npm install json-format-converter

Features

Convert JSON to CSV format
Convert JSON to PDF format
Support for nested JSON structures
Built-in Express server for API endpoints
Direct conversion methods
Error handling and validation

Quick Start

Using as a Package

import JSONFormatConverter from 'json-format-converter';

const converter = new JSONFormatConverter();

// Sample data
const data = {
    users: [
        { name: "John Smith", age: 30, email: "john@example.com" },
        { name: "Jane Doe", age: 25, email: "jane@example.com" }
    ]
};

// Convert to CSV
const csvData = await converter.convertToCSV(data);

// Convert to PDF
const pdfData = await converter.convertToPDF(data);

Using as an API Server

import JSONFormatConverter from 'json-format-converter';

const converter = new JSONFormatConverter({ port: 3000 });

converter.listen(() => {
    console.log('Server running on port 3000');
});

Then make POST requests to:

/api/convert/csv - for CSV conversion
/api/convert/pdf - for PDF conversion

API Reference

Class: JSONFormatConverter

Constructor Options

const options = {
    port: 3000,              // Server port number (default: 3000)
    corsOptions: {},         // CORS configuration options
}

const converter = new JSONFormatConverter(options);

Methods

convertToCSV(jsonData): Convert JSON to CSV
convertToPDF(jsonData): Convert JSON to PDF
listen(callback): Start the Express server

Example Usage

Converting to CSV

const data = {
    users: [
        { name: "John", age: 30 },
        { name: "Jane", age: 25 }
    ]
};

const csvData = await converter.convertToCSV(data);

Converting to PDF

const pdfData = await converter.convertToPDF(data);

API Endpoints

Using curl:

# Convert to CSV
curl -X POST \
  http://localhost:3000/api/convert/csv \
  -H "Content-Type: application/json" \
  -d '{"users":[{"name":"John","age":30},{"name":"Jane","age":25}]}'

# Convert to PDF
curl -X POST \
  http://localhost:3000/api/convert/pdf \
  -H "Content-Type: application/json" \
  -d '{"users":[{"name":"John","age":30},{"name":"Jane","age":25}]}'