samthor

// This code now lives at https://github.com/samthor/undoer (or 'undoer' on NPM).

samthor

package main

import (
        "crypto/tls"
        "flag"
        "fmt"
        "log"
        "net/http"
        "os"
        "os/user"

samthor

Array.from(document.styleSheets).forEach((ss) => {
  const toDelete = [];
  const toReplace = new Map();

  for (let i = 0; i < ss.rules.length; ++i) {
    const rule = ss.rules[i];
    if (!(rule instanceof CSSMediaRule)) {
      continue;
    }

samthor

const functionMatch = /^function\s*\w*\(([\w\s,]+)\) {/;

/**
 * @param {!Function} fn
 * @return {!Array<string>} array of simple arg names (no =, ... etc)
 */
function simpleArgNames(fn) {
  const match = functionRe.exec(fn.toString());
  if (!match) { return []; }
  const args = match[1].split(',').map((x) => x.trim());

samthor

TODO

Hashed modules are different

import './banana.js';
import './banana.js#foo';

These are both run by Chrome 61, but are only fetched from the network once!

samthor

/**
 * Updates the passed dialog to retain focus and restore it when the dialog is closed. Won't
 * upgrade a dialog more than once. Supports IE11+ and is a no-op otherwise.
 * @param {!HTMLDialogElement} dialog to upgrade
 */
var registerFocusRestoreDialog = (function() {
  if (!window.WeakMap || !window.MutationObserver) {
    return function() {};
  }
  var registered = new WeakMap();

samthor

function isLandscape() {
  var object = window.screen.orientation || window.screen.msOrientation || window.screen.mozOrientation || null;
  if (object) {
    if (object.type.indexOf('landscape') !== -1) { return true; }
    if (object.type.indexOf('portrait') !== -1) { return false; }
  }
  if ('orientation' in window) {
    var value = window.orientation;
    if (value === 0 || value === 180) {
      return false;

samthor

// usage:
//   importScript('./path/to/script.js').then((allExports) => { .... }));
function importScript(path) {
  let entry = window.importScript.__db[path];
  if (entry === undefined) {
    const escape = path.replace(`'`, `\\'`);
    const script = Object.assign(document.createElement('script'), {
      type: 'module',
      textContent: `import * as x from '${escape}'; importScript.__db['${escape}'].resolve(x);`,
    });

samthor

/*
 * Copyright 2008 Sam Thorogood. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

samthor

// UPDATE: In 2023, you should probably stop using this! The narrow version of Safari that
// does not support `nomodule` is probably not being used anywhere. The code below is left
// for posterity.

/**
 * Safari 10.1 supports modules, but does not support the `nomodule` attribute - it will
 * load <script nomodule> anyway. This snippet solve this problem, but only for script
 * tags that load external code, e.g.: <script nomodule src="nomodule.js"></script>
 *
 * Again: this will **not** prevent inline script, e.g.: