unicorn/prefer-at
Please find additional information here: - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at - https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/prefer-at.md
- the language specifications are: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.364.2157&rep=rep1&type=pdf#page=1049 - it can be used to: * as a scripting language for calculation, validations, ... * in SOM expressions to select nodes: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.364.2157&rep=rep1&type=pdf#page=101