Light ECMAScript Value Notation (LEVN)

Levn is a JavaScript library for parsing human-readable string input into structured JavaScript values, leveraging type validation. It is designed for concise, human-authored data, such as configuration files or command-line arguments, distinguishing itself from JSON by prioritizing human readability, conciseness, and built-in type validation via `type-check`. It supports regex and date literals and is extensible with custom types. Unlike JSON, it is not optimized for large-scale data transport due to its parsing overhead. The current stable version is 0.4.1. This package appears to be largely unmaintained, with its last npm publish over six years ago and minimal activity on its GitHub repository in recent years.