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128 lines
3.6 KiB
128 lines
3.6 KiB
/* global chrome */
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// This file is used only for manifest version 3
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// Represents if importAllScripts has been run
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// eslint-disable-next-line
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let scriptsLoadInitiated = false;
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// Variable testMode is set to true when preparing test build.
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// This helps in changing service worker execution in test environment.
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const testMode = false;
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const loadTimeLogs = [];
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// eslint-disable-next-line import/unambiguous
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function tryImport(...fileNames) {
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try {
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const startTime = new Date().getTime();
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// eslint-disable-next-line
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importScripts(...fileNames);
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const endTime = new Date().getTime();
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loadTimeLogs.push({
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name: fileNames[0],
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value: endTime - startTime,
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children: [],
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startTime,
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endTime,
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});
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return true;
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} catch (e) {
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console.error(e);
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}
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return false;
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}
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function importAllScripts() {
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// Bail if we've already imported scripts
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if (scriptsLoadInitiated) {
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return;
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}
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scriptsLoadInitiated = true;
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const files = [];
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// In testMode individual files are imported, this is to help capture load time stats
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const loadFile = (fileName) => {
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if (testMode) {
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tryImport(fileName);
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} else {
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files.push(fileName);
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}
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};
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const startImportScriptsTime = Date.now();
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// value of applyLavaMoat below is dynamically replaced at build time with actual value
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const applyLavaMoat = true;
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loadFile('./globalthis.js');
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loadFile('./sentry-install.js');
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if (applyLavaMoat) {
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loadFile('./runtime-lavamoat.js');
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loadFile('./lockdown-more.js');
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loadFile('./policy-load.js');
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} else {
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loadFile('./init-globals.js');
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loadFile('./lockdown-install.js');
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loadFile('./lockdown-run.js');
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loadFile('./lockdown-more.js');
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loadFile('./runtime-cjs.js');
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}
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const fileList = [
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// The list of files is injected at build time by replacing comment below with comma separated strings of file names
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// https://github.com/MetaMask/metamask-extension/blob/496d9d81c3367931031edc11402552690c771acf/development/build/scripts.js#L406
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/** FILE NAMES */
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];
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fileList.forEach((fileName) => loadFile(fileName));
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// Import all required resources
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tryImport(...files);
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const endImportScriptsTime = Date.now();
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// for performance metrics/reference
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console.log(
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`SCRIPTS IMPORT COMPLETE in Seconds: ${
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(Date.now() - startImportScriptsTime) / 1000
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}`,
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);
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// In testMode load time logs are output to console
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if (testMode) {
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console.log(
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`Time for each import: ${JSON.stringify(
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{
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name: 'Total',
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children: loadTimeLogs,
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startTime: startImportScriptsTime,
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endTime: endImportScriptsTime,
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value: endImportScriptsTime - startImportScriptsTime,
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version: 1,
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},
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undefined,
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' ',
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)}`,
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);
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}
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}
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// Ref: https://stackoverflow.com/questions/66406672/chrome-extension-mv3-modularize-service-worker-js-file
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// eslint-disable-next-line no-undef
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self.addEventListener('install', importAllScripts);
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/*
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* A keepalive message listener to prevent Service Worker getting shut down due to inactivity.
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* UI sends the message periodically, in a setInterval.
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* Chrome will revive the service worker if it was shut down, whenever a new message is sent, but only if a listener was defined here.
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*
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* chrome below needs to be replaced by cross-browser object,
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* but there is issue in importing webextension-polyfill into service worker.
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* chrome does seems to work in at-least all chromium based browsers
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*/
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chrome.runtime.onMessage.addListener(() => {
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importAllScripts();
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return false;
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});
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