Important
This repository is moved to Codeberg.org.
For now it is kept in sync with the original repository @Github.
Depending on future USA/Microsoft/Github policies the Github version maybe discontinued later.
In other words, starting july 17 2025 the Codeberg repository of es-contract-fiddler is authorative.
This small library enables a programmer to create specified contracts for variables to use in code.
See DEMO.