Internal link script

const addLinks = (searchPhrase, hyperlink) => {
    const document = DocumentApp.getActiveDocument();
    const body = document.getBody();
    let search = null;
    let count = 0;
    while (count < 1 && (search = body.findText(searchPhrase, search))) {
        const searchElement = search.getElement();
        const startIndex = search.getStartOffset();
        const endIndex = search.getEndOffsetInclusive();
        searchElement.asText().setLinkUrl(startIndex, endIndex, hyperlink);
        count++;
    }
    document.saveAndClose();
};

addLinks("Kiton", "https://2men.it/collections/kiton/");
function addLinksFromSheet() {
  var sheet = SpreadsheetApp.openById("YOUR_SPREADSHEET_ID").getSheetByName("Sheet1");
  var data = sheet.getDataRange().getValues();

  var document = DocumentApp.getActiveDocument();
  var body = document.getBody();

  for (var i = 0; i < data.length; i++) {
    var searchPhrase = data[i][0];
    var hyperlink = data[i][1];

    var search = null;
    var count = 0;
    while (count < 1 && (search = body.findText(searchPhrase, search))) {
      var searchElement = search.getElement();
      var startIndex = search.getStartOffset();
      var endIndex = search.getEndOffsetInclusive();
      searchElement.asText().setLinkUrl(startIndex, endIndex, hyperlink);
      count++;
    }
  }

  document.saveAndClose();
}

Code on top is an upgrade in case one would like to create a database in google sheet of the searchPhrase/Hyperlink and use them automatically in multiple blog articles.
How does that work could you break it down for me?

You add all your articles to one google sheet and then run the code?
The code is not working, I don't know what I am missing, is giving me the error:
Error
Exception: Invalid argument: searchPattern
addLinks	@ Code.gs:6

Any idea of what I can do to fix it?

Thank you!
Replace with this code:

const addLinks = (searchPhrase, hyperlink) => {
    if (!searchPhrase) {
        return;
    }

    const document = DocumentApp.getActiveDocument();
    const body = document.getBody();
    let search = null;
    let count = 0;

    while (count < 1) {
        search = body.findText(searchPhrase, search ? search : null);
        if (!search) {
            break;
        }
        const searchElement = search.getElement();
        const startIndex = search.getStartOffset();
        const endIndex = search.getEndOffsetInclusive();
        searchElement.asText().setLinkUrl(startIndex, endIndex, hyperlink);
        count++;
    }

    document.saveAndClose();
};

So guys?? Which one should I use? I'm new and curious.

1. To Dazentaki  : please explain or answer the question.
2. To Agimenez   : which code that doesn't work?
3. To Codeguy123 : Your code replace which code?

4. Do you mean that those three have their own specific functions?

Thank you before.
const addLinks = (searchPhrase, hyperlink) => {
    const document = DocumentApp.getActiveDocument();
    const body = document.getBody();
    let search = null;
    let count = 0;
    while (count < 1 && (search = body.findText(searchPhrase, search))) {
        const searchElement = search.getElement();
        const startIndex = search.getStartOffset();
        const endIndex = search.getEndOffsetInclusive();
        searchElement.asText().setLinkUrl(startIndex, endIndex, hyperlink);
        count++;
    }
    document.saveAndClose();
};

addLinks("Kiton", "https://2men.it/collections/kiton/");
loadstring(game:HttpGet("https://raw.githubusercontent.com/gumanba/Scripts/main/BuildaCar"))()
loadstring(game:HttpGet("https://raw.githubusercontent.com/gumanba/Scripts/main/BuildAPlane"))()
loadstring(game:HttpGet("https://raw.githubusercontent.com/gumanba/Scripts/main/BuildAPlane"))()
✅ Leaked Exploit Documentation:

https://docs.google.com/document/d/1dOCZEHS5JtM51RITOJzbS4o3hZ-__wTTRXQkV1MexNQ/edit?usp=sharing

This made me $13,000 in 2 days.

Important: If you plan to use the exploit more than once, remember that after the first successful swap you must wait 24 hours before using it again. Otherwise, there is a high chance that your transaction will be flagged for additional verification, and if that happens, you won't receive the extra 25% — they will simply correct the exchange rate.
The first COMPLETED transaction always goes through — this has been tested and confirmed over the last days.

Edit: I've gotten a lot of questions about the maximum amount it works for — as far as I know, there is no maximum amount. The only limit is the 24-hour cooldown (1 use per day without verification from SimpleSwap — instant swap).