@tidyjs/tidy/dist/es/fill.js

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

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

function fill(keys) {
  const _fill = (items) => {
    const keysArray = singleOrArray(keys);
    const replaceMap = {};
    return items.map((d) => {
      const obj = {...d};
      for (const key of keysArray) {
        if (obj[key] != null) {
          replaceMap[key] = obj[key];
        } else if (replaceMap[key] != null) {
          obj[key] = replaceMap[key];
        }
      }
      return obj;
    });
  };
  return _fill;
}

export { fill };
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