gecko-dev/browser/extensions/screenshots/selector/callBackground.js

32 строки
1.1 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
/* globals log */
"use strict";
this.callBackground = function callBackground(funcName, ...args) {
return browser.runtime.sendMessage({funcName, args}).then((result) => {
if (result && result.type === "success") {
return result.value;
} else if (result && result.type === "error") {
const exc = new Error(result.message || "Unknown error");
exc.name = "BackgroundError";
if ("errorCode" in result) {
exc.errorCode = result.errorCode;
}
if ("popupMessage" in result) {
exc.popupMessage = result.popupMessage;
}
throw exc;
} else {
log.error("Unexpected background result:", result);
const exc = new Error(`Bad response type from background page: ${result && result.type || undefined}`);
exc.resultType = result ? (result.type || "undefined") : "undefined result";
throw exc;
}
});
};
null;