Elasticsearch Date Math Parser

datemath-parser is a JavaScript library designed to parse date math expressions compatible with the Elasticsearch format. It takes expressions like `now+1h`, `now+1M/d`, or `2012-01-01||+1M/d` and returns an integer representing the timestamp in milliseconds. The current stable version is 1.0.6. This package appears to be largely unmaintained, with its last update occurring in 2018. While functional for its specific purpose, developers should be aware of its inactive development cycle when considering it for new projects or environments with strict maintenance requirements. It differentiates itself by adhering strictly to Elasticsearch's date math specification, making it a targeted solution for systems interacting with Elasticsearch date queries. Other, more actively maintained libraries, like `@elastic/datemath` or `date-fns` may offer broader date manipulation capabilities and better support.