index.js

const axios = require("axios");
const cheerio = require("cheerio");

// console.log("start script")

//meta data
const url = "http://www.koeri.boun.edu.tr/scripts/lst0.asp";
const template = {
  tarih: "",
  saat: "",
  enlem: "",
  boylam: "",
  derinlikkm: "",
  md: "",
  ml: "",
  yer: "",
  cozumniteligi: "",
};

//helpers
// /\(.*\)|\{.*\}|\[.*\]/
const isUpperAlphaOrBrackets = (str) => str.match(/^[A-Z]+$|\(.*\)/) && true;
const isIlksel = (str) => (str.match(/.*(sel)/) ? true : false);
const isRevize = (str) => str.match(/^[A-Z]+[0-9]+$/) && true;

//run
axios
  .get(url) // Layer of request
  .then((response) => {
    //layer of htmlParse
    const $ = cheerio.load(response.data);
    return $("pre").html().split("\n").slice(7); // We dont need the first 7 lines.
  })
  .then((chunk) =>
    chunk.reduce((acc, val) => {
      // split and trim all rows
      return [
        ...acc,
        val.split("\n") && val.split(" ").filter((i) => i !== ""),
      ];
    }, [])
  )
  .then((data) =>
    data.map((item) => {
      //concat data and template
      if (Array.isArray(item)) {
        return {
          ...template,
          [Object.keys(template)[0]]: item[0],
          [Object.keys(template)[1]]: item[1],
          [Object.keys(template)[2]]: item[2],
          [Object.keys(template)[3]]: item[3],
          [Object.keys(template)[4]]: item[4],
          [Object.keys(template)[5]]: item[5],
          [Object.keys(template)[6]]: item[6],
          [Object.keys(template)[7]]: item.reduce((acc, item) => {
            if (isUpperAlphaOrBrackets(item)) return acc.concat(" ", item);
            return acc;
          }, ""),
          [Object.keys(template)[8]]: item.reduce((acc, val) => {
            if (isIlksel(val)) return acc.concat("İlksel");
            if (isRevize(val)) return acc.concat(item.slice(item.indexOf(val)));
            return acc;
          }, ""),
        };
      }
      return [...item];
    }, [])
  )
  .then((result) => {
    const [_, ml] = process.argv.slice(2);
      return ml ?
      result.filter((x) => parseFloat(x.ml) >= ml)
      : result
  })
  .then((data) => console.log(JSON.stringify(data, null, 2)))
  .catch((err) => console.log(err));