@hbtgmbh/dmn-eval-js/utils/built-in-functions/boolean-functions/not.js

Evaluation of DMN 1.1 decision tables, limited to S-FEEL (Simple Friendly Enough Expression Language)

/*
*
*  ©2016-2017 EdgeVerve Systems Limited (a fully owned Infosys subsidiary),
*  Bangalore, India. All Rights Reserved.
*
*/

/*
creates a negation function for any curried function
fn is expected to be a curried function with pre-populated x
fn signature - function(x,y) { // function body  }
*/

const not = fn => (y) => {
  let value = fn(y);
  if (value !== undefined) {
    value = !value;
  }
  return value;
};

module.exports = { not };