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/* 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
"use strict";
const ResourceCommand = require("resource://devtools/shared/commands/resource/resource-command.js");
module.exports = async function ({ targetCommand, targetFront, onAvailable }) {
// Allow the top level target unconditionnally.
// Also allow frame, but only in content toolbox, i.e. still ignore them in
// the context of the browser toolbox as we inspect messages via the process
// targets
const listenForFrames = targetCommand.descriptorFront.isTabDescriptor;
const isAllowed =
targetFront.isTopLevel ||
targetFront.targetType === targetCommand.TYPES.PROCESS ||
(targetFront.targetType === targetCommand.TYPES.FRAME && listenForFrames);
if (!isAllowed) {
return;
}
const webConsoleFront = await targetFront.getFront("console");
if (webConsoleFront.isDestroyed()) {
return;
}
// Request notifying about new messages. Here the "PageError" type start listening for
// both actual PageErrors (emitted as "pageError" events) as well as LogMessages (
// emitted as "logMessage" events). This function only set up the listener on the
// webConsoleFront for "pageError".
await webConsoleFront.startListeners(["PageError"]);
// Fetch already existing messages
// /!\ The actor implementation requires to call startListeners("PageError") first /!\
let { messages } = await webConsoleFront.getCachedMessages(["PageError"]);
// On server < v79, we're also getting CSS Messages that we need to filter out.
messages = messages.filter(
message => message.pageError.category !== MESSAGE_CATEGORY.CSS_PARSER
);
messages.forEach(message => {
message.resourceType = ResourceCommand.TYPES.ERROR_MESSAGE;
});
// Cached messages don't have the same shape as live messages,
// so we need to transform them.
onAvailable(messages);
webConsoleFront.on("pageError", message => {
// On server < v79, we're getting CSS Messages that we need to filter out.
if (message.pageError.category === MESSAGE_CATEGORY.CSS_PARSER) {
return;
}
message.resourceType = ResourceCommand.TYPES.ERROR_MESSAGE;
onAvailable([message]);
});
};