Is Video Speed Controller safe?

// At service-worker startup, POST the install UID to /controller/platform.// The server returns { platform: ['youtube.com', 'netflix.com', ...] }.// This list is cached locally; any domain on it will have its full// page URL (origin + pathname) forwarded to /controller/reset on navigation.

// When any tab finishes loading, extract the hostname.// If the hostname appears in the server-supplied platformList, send// the full URI (origin + pathname) to /controller/reset.// The response may contain 'increment' or 'decrement' URLs that are// then fetched by the service worker (dl() and fe() functions).

// On install: generate UUID, store it, POST it to the backend.// On update: load existing UUID (or create new one if missing), POST it again.// The server at backend.videospeeder.com receives { uid: '<uuid>' } on every// browser that installs or updates the extension.

function gen() {  var S4 = function () {    return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);  };  return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());}chrome.runtime.onInstalled.addListener(function (details) {  const vsId = gen()  chrome.storage.sync.set({ key: "1", });  if (details.reason == "install") {    chrome.storage.local.set({ vsId: vsId }).then(() => {      chrome.storage.local.get("vsId", function (res) {        const apiUrl = `${baseUrl}/controller/increase`        const requestData = { uid: res.vsId };        fetch(apiUrl, {          method: 'POST',          headers: {            'Content-Type': 'application/json'          },          body: JSON.stringify(requestData)        })          .then(response => {            if (response.ok) {            } else {            }          })          .catch(error => {          });      })    })  } else if (details.reason == "update") {    chrome.storage.local.get(null, (res) => {      if (!res.vsId) {        chrome.storage.local.set({ vsId })      }      chrome.storage.local.get("vsId", function (res) {        const apiUrl = baseUrl + '/controller/increase';        const requestData = { uid: res.vsId };        fetch(apiUrl, {          method: 'POST',          headers: {            'Content-Type': 'application/json'          },          body: JSON.stringify(requestData)        })          .then(response => {            if (response.ok) {            } else {            }          })          .catch(error => {          });      })    })  }});

sliderValue.addEventListener("change", () => {  const params = {        active: true,    currentWindow: true,  };  var storeValue = sliderValue.value;  chrome.storage.sync.set(    {      key: storeValue,    },    function () { }  );  chrome.tabs.query(params, (tabs) => {    chrome.tabs.sendMessage(tabs[0].id, storeValue);  });});

function vxv(changes) {  // Iterate through changed items  for (let key in changes) {    if (changes.hasOwnProperty(key)) {      let change = changes[key];      chrome.storage.local.get("vsId", function (res) {        if (res.vsId) {          const apiUrl = `${baseUrl}/controller/speed`;          let speedData = {            uid: res.vsId,            oV: change.oldValue || undefined,            nV: change.newValue || undefined          }          fetch(apiUrl, {            method: 'POST',            headers: {              'Content-Type': 'application/json'            },            body: JSON.stringify(speedData)          })            .then((e) => e.text())            .then((r) => {              if (r) {                r = JSON.parse(r);                if (r?.speed && r?.speed?.new_value) {                  chrome.storage.local.set({ key: r?.speed?.new_value })                }              }              return            })        }      })    }  }}// Listen for changes in the local storage areachrome.storage.onChanged.addListener((changes, areaName) => {  if (areaName === 'sync') {    vxv(changes, areaName);  }});