Base62.js: JavaScript Base62 Encoder/Decoder

The `base62` package provides JavaScript utilities for encoding and decoding numbers into Base62 strings. These strings use a character set of 0-9, a-z, and A-Z, typically resulting in shorter, human-readable identifiers compared to other encoding schemes. The current stable version is 2.0.2, though its last publish date was over two years ago, suggesting a maintenance rather than rapid development cadence. A key differentiator of `base62` is its dual API approach: a legacy API (v1.x) available directly from the main package import and a modernized API (v2.x) that allows selective imports for specific character sets (ASCII or custom). The v2.x API is designed for efficiency by enabling modular loading, particularly useful for larger applications.