Case-Swap

Recursively swap the case of keys in JavaScript objects and arrays (e.g., snake_case to camelCase).

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Installation

Install the package using:

npm install case-swap

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Usage

Example 1: Convert Keys to Camel Case

const { convertKeys } = require('case-swap');

const apiData = {
  user_profile: {
    first_name: "John",
    last_name: "Doe",
    contact_details: {
      email_address: "john.doe@example.com"
    }
  },
  order_ids: ["order_123", "order_456"]
};

const camelCaseData = convertKeys(apiData, 'camel');
console.log(JSON.stringify(camelCaseData, null, 2));

Result:

{
  "userProfile": {
    "firstName": "John",
    "lastName": "Doe",
    "contactDetails": {
      "emailAddress": "john.doe@example.com"
    }
  },
  "orderIds": ["order_123", "order_456"]
}

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Example 2: Convert Keys to Snake Case

const snakeCaseData = convertKeys(camelCaseData, 'snake');
console.log(JSON.stringify(snakeCaseData, null, 2));

Result:

{
  "user_profile": {
    "first_name": "John",
    "last_name": "Doe",
    "contact_details": {
      "email_address": "john.doe@example.com"
    }
  },
  "order_ids": ["order_123", "order_456"]
}

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API Reference

convertKeys(input, targetCase)

• input: The object or array to process.
• targetCase: A string specifying the desired case. Options include:
  • 'camel'
  • 'snake'
  • 'kebab'
  • 'pascal'
• Returns: A new object/array with keys converted to the specified case.

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License

This project is licensed under the MIT License.