Istanbul Coverage Threshold Checker

This package, `istanbul-threshold-checker`, provides a utility for validating code coverage reports generated by Istanbul against user-defined thresholds. It allows developers to enforce minimum coverage percentages or maximum allowed uncovered entities for statements, branches, lines, and functions. Thresholds can be configured globally for the entire project or on a per-file basis, offering granular control over coverage requirements. Last published in November 2016 at version 0.2.1, this module is considered abandoned. Its core functionality for checking coverage thresholds has since been integrated directly into the `istanbul` project's command-line interface, `nyc`, as well as into popular testing frameworks like Jest. Modern projects are advised to use `nyc`'s native threshold checking capabilities or those provided by their testing framework rather than relying on this standalone, unmaintained package. It strictly uses CommonJS `require` syntax and depends on an older version of `istanbul`, which may lead to compatibility issues with contemporary coverage formats.