@tidyjs/tidy/dist/es/selectors/negate.js

Tidy up your data with JavaScript, inspired by dplyr and the tidyverse

import { singleOrArray } from '../helpers/singleOrArray.js';

function negate(selectors) {
  return (items) => {
    let keySet = new Set();
    for (const selector of singleOrArray(selectors)) {
      if (typeof selector === "function") {
        const keys2 = selector(items);
        for (const key of keys2) {
          keySet.add(key);
        }
      } else {
        keySet.add(selector);
      }
    }
    const keys = Array.from(keySet).map((key) => `-${key}`);
    return keys;
  };
}

export { negate };
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