/**

* Removes duplicate URLs from an array of URLs.

*

* @param {string[]} urls An array of URLs.

* @returns {string[]} A new array containing only unique URLs.

*/

function removeDuplicateUrls(urls) {

if (!Array.isArray(urls)) {

console.error("Input must be an array.");

return [];

}

const uniqueUrls = [];

const seen = new Set(); // Use a Set for efficient duplicate checking

for (const url of urls) {

if (typeof url !== 'string') {

console.warn("Skipping non-string value:", url);

continue;

}

const normalizedUrl = url.trim().toLowerCase(); // Normalize for case-insensitive comparison

if (!seen.has(normalizedUrl)) {

uniqueUrls.push(url);

seen.add(normalizedUrl);

}

}

return uniqueUrls;

}

// Example Usage (for testing)

// const urlList = [

// "https://www.example.com",

// "example.com",

// "https://www.example.com",

// "https://example.com",

// "example.com ",

// "invalid url",

// 123,

// "https://www.EXAMPLE.com"

// ];

// const uniqueList = removeDuplicateUrls(urlList);

// console.log(uniqueList);