TLV Parser for Node.js

The `node-tlv` library provides a robust parser and builder for Tag-Length-Value (TLV) encoded data, commonly found in smart card protocols like EMV and ISO7816. It supports parsing both simple TLV and BER-TLV structures, allowing developers to extract and manipulate data elements such as DGI, EMV, ISO7816, and DOL tags. Currently at stable version 1.5.14, the package does not explicitly state a release cadence, but its versioning and continuous updates suggest ongoing maintenance. Its key differentiator lies in its focused support for financial and smart card industry standards, offering both parsing of raw hexadecimal strings into structured TLV objects and the ability to programmatically construct complex TLV hierarchies, useful for building responses like PPSE FCI or PSE records. It is designed for Node.js environments, providing a programmatic interface to navigate and construct TLV data structures.