TaxJar Node.js Client

The `taxjar` package provides the official Node.js client for integrating with the TaxJar Sales Tax API v2. It allows developers to perform sales tax calculations, manage order and refund transactions, list tax categories, retrieve tax rates for specific locations, manage customer records, and validate VAT numbers and addresses. The library is actively maintained; the latest stable major version is v5.0.0, which requires Node.js v18 or newer and leverages native `fetch`. Prior to this, v4.1.0 was the stable release. TaxJar typically follows a regular release cadence, addressing API changes and adding new functionalities. Its primary advantage is providing a direct, officially supported interface to the comprehensive TaxJar API, abstracting away HTTP request handling and API-specific nuances, making it easier for applications to comply with sales tax regulations.