Help required to get WCAG level and Checkpoint for npm accessibility-checker

[ashishverma012]

I am using npm accessibility-checker package (https://www.npmjs.com/package/accessibility-checker) using Javacsript and I am able extract voilations such as ruleId, message etc but I have requirement to get wcag level (such as A, AA etc) and Checkpoint (such as 2.1.1 Keyboard, 1.1.1 Non-text Content etc). I tried many things but not able to get these parameters. Please assist if someone is aware of this.