preload.js

const { readFileSync } = require('fs')



readjson = function () {
    const if_data  = JSON.parse(readFileSync(__dirname + "/res/if2023.json"));
    return if_data;
}

levenshtein = function(a, b) {
    if(a.length == 0) return b.length; 
    if(b.length == 0) return a.length;
  
    // swap to save some memory O(min(a,b)) instead of O(a)
    if(a.length > b.length) {
      var tmp = a;
      a = b;
      b = tmp;
    }
  
    var row = [];
    // init the row
    for(var i = 0; i <= a.length; i++){
      row[i] = i;
    }
  
    // fill in the rest
    for(var i = 1; i <= b.length; i++){
      var prev = i;
      for(var j = 1; j <= a.length; j++){
        var val;
        if(b.charAt(i-1) == a.charAt(j-1)){
          val = row[j-1]; // match
        } else {
          val = Math.min(row[j-1] + 1, // substitution
                         prev + 1,     // insertion
                         row[j] + 1);  // deletion
        }
        row[j - 1] = prev;
        prev = val;
      }
      row[a.length] = prev;
    }
  
    return row[a.length];
  }

function comparef(x, y) {
    return levenshtein(x, "nature") - levenshtein(y, "nature")
}