text: 'use strict';
  
  const leftJoin = (leftObj, rightObj) => {
  
    const matrix = [];
  
    let keys = Object.keys(leftObj);
  
    for (let i = 0; i < keys.length; i++) {
      const arr = [];
  
      let key = keys[i];
      arr.push(key);
  
      let syn = leftObj[keys[i]];
      arr.push(syn);
  
      let ant = rightObj[keys[i]];
      if (ant) {
        arr.push(ant);
      } else {
        arr.push(null);
      }
  
      matrix.push(arr);
    }
  
    return matrix;
  };
  
  module.exports = leftJoin;
  