Fixed-Width Data Parser

The `fixed-width-parser` package provides a robust Node.js module for parsing and unparsing data from and to fixed-width string formats. Currently stable at version `3.0.0`, it offers a flexible configuration API where developers define field mappings using an array of objects, specifying `name`, `type` (e.g., 'string', 'int'), `start` index, and `width`. The library handles common parsing challenges such as padding, truncation, default values for undefined fields, and explicit `falsyFallback` options for parsed values. It ships with TypeScript type definitions, making it well-suited for modern TypeScript and JavaScript projects, and primarily targets server-side data processing due to its Node.js engine requirement. While a strict release cadence isn't published, major versions are released to introduce significant features or API adjustments, maintaining a focus on stability and clear API design.