morph-data

High-fidelity data conversion between CSV, JSON, YAML, and Markdown table formats. Zero dependencies, lightweight, and built for production use.

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Features

• CSV to JSON -- Parses CSV strings into arrays of objects with automatic type detection (numbers, booleans).
• JSON to CSV -- Converts arrays of objects to properly escaped CSV strings with configurable delimiters.
• JSON to YAML -- Serializes JavaScript objects and arrays into clean YAML output.
• JSON to Markdown Table -- Generates formatted Markdown tables from structured data.
• Quoted Field Handling -- Correctly handles commas, newlines, and escaped quotes inside CSV fields.
• Zero Dependencies -- No external packages required. Tiny footprint for your bundle.

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Installation

npm install morph-data

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Usage

CSV to JSON

const morph = require('morph-data');

const csv = `id,name,email,active
1,"Doe, John",john@example.com,true
2,"Smith, Jane",jane@example.com,false
3,"Williams, Bob",bob@example.com,true`;

const result = morph.csvToJson(csv);
console.log(result);

// Output:
// [
//   { id: 1, name: 'Doe, John', email: 'john@example.com', active: true },
//   { id: 2, name: 'Smith, Jane', email: 'jane@example.com', active: false },
//   { id: 3, name: 'Williams, Bob', email: 'bob@example.com', active: true }
// ]

JSON to CSV

const morph = require('morph-data');

const users = [
  { id: 1, name: 'Alice', department: 'Engineering', salary: 95000 },
  { id: 2, name: 'Bob', department: 'Design', salary: 85000 },
  { id: 3, name: 'Charlie', department: 'Marketing', salary: 78000 }
];

const csv = morph.jsonToCsv(users);
console.log(csv);

// Output:
// id,name,department,salary
// 1,Alice,Engineering,95000
// 2,Bob,Design,85000
// 3,Charlie,Marketing,78000

JSON to CSV with Custom Delimiter

const morph = require('morph-data');

const data = [
  { product: 'Laptop', price: 1299.99, stock: 45 },
  { product: 'Mouse', price: 29.99, stock: 200 }
];

// Use semicolons (common in European CSV formats)
const csv = morph.jsonToCsv(data, ';');
console.log(csv);

// Output:
// product;price;stock
// Laptop;1299.99;45
// Mouse;29.99;200

JSON to YAML

const morph = require('morph-data');

const config = {
  server: {
    port: 8080,
    host: 'localhost',
    ssl: false
  },
  database: {
    host: 'db.example.com',
    port: 5432,
    name: 'myapp'
  },
  features: ['authentication', 'caching', 'logging']
};

const yaml = morph.jsonToYaml(config);
console.log(yaml);

// Output:
// server:
//   port: 8080
//   host: localhost
//   ssl: false
// database:
//   host: db.example.com
//   port: 5432
//   name: myapp
// features:
//   - authentication
//   - caching
//   - logging

JSON to Markdown Table

const morph = require('morph-data');

const packages = [
  { name: 'morph-data', version: '1.0.0', downloads: 1200 },
  { name: 'mem-stash', version: '2.1.0', downloads: 890 },
  { name: 'seo-meta', version: '1.3.0', downloads: 2100 }
];

const table = morph.jsonToMarkdownTable(packages);
console.log(table);

// Output:
// | name | version | downloads |
// | --- | --- | --- |
// | morph-data | 1.0.0 | 1200 |
// | mem-stash | 2.1.0 | 890 |
// | seo-meta | 1.3.0 | 2100 |

Using a Custom Instance

const { MorphData } = require('morph-data');

const transformer = new MorphData();
const json = transformer.csvToJson(myCsvString);

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API Reference

Method	Parameters	Returns	Description
csvToJson(csv, delimiter)	csv: string, delimiter: string (default ',')	Array<Object>	Parses CSV into JSON objects
jsonToCsv(json, delimiter)	json: Array<Object>, delimiter: string (default ',')	string	Converts JSON to CSV string
jsonToYaml(json, indent)	json: Object, indent: number (default 2)	string	Serializes JSON to YAML
jsonToMarkdownTable(json)	json: Array<Object>	string	Converts JSON to Markdown table

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License

MIT -- see LICENSE for details.