tor-browser

UtilsChild.mjs (1001B)

---

/**
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
*/

function _sendMessage(messageBody) {
 const messageHeader = {
   moduleName: "UtilsParent",
   objectName: "UtilsParent",
 };

 const message = { ...messageHeader, ...messageBody };

 postMessage(message);
}

function _recvMessage() {
 return new Promise(function (resolve) {
   addEventListener("message", async function onMessage(event) {
     removeEventListener("message", onMessage);
     const data = event.data;
     resolve(data);
   });
 });
}

export const UtilsChild = {
 async getCachedOriginUsage() {
   _sendMessage({
     op: "getCachedOriginUsage",
   });

   return _recvMessage();
 },

 async shrinkStorageSize(size) {
   _sendMessage({
     op: "shrinkStorageSize",
     size,
   });

   return _recvMessage();
 },

 async restoreStorageSize() {
   _sendMessage({
     op: "restoreStorageSize",
   });

   return _recvMessage();
 },
};