add common tool

.editorconfig

@@ -0,0 +1,33 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+# Set default charset
+[*.{js,py}]
+charset = utf-8
+
+# 4 space indentation
+[*.py]
+indent_style = space
+indent_size = 4
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab
+
+# Indentation override for all JS under lib directory
+[lib/**.js]
+indent_style = space
+indent_size = 2
+
+# Matches the exact files either package.json or .travis.yml
+[{package.json,.travis.yml}]
+indent_style = space
+indent_size = 2

tools/chromium_extension/js/app/until.js

@@ -16,4 +16,88 @@ function removeClass(el, className) {
   }
 }
 
-export { addClass, removeClass };
+function getCookie(name) {
+  let arr,
+    reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
+  if ((arr = document.cookie.match(reg))) {
+    return decodeURIComponent(arr[2]);
+  } else {
+    return null;
+  }
+  //await cookieStore.get({name:name})
+}
+
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+
+function setCookie(name, value, second, domain) {
+  var exp = new Date();
+  exp.setTime(exp.getTime() + second * 1000);
+  document.cookie =
+    name +
+    "=" +
+    encodeURIComponent(value) +
+    ";expires=" +
+    exp.toGMTString() +
+    ";path=/;domain=" +
+    domain +
+    ";SameSite=None;Secure";
+}
+async function getCookies(domain) {
+  let cookies = await cookieStore.getAll({ domain: domain });
+  return cookies;
+}
+
+function encodeBase64(str) {
+  return btoa(encodeURIComponent(str));
+}
+
+function decodeBase64(encoded) {
+  return decodeURIComponent(atob(encoded));
+}
+
+function getParameterValue(name) {
+  let reg = new RegExp("[^?&]?" + encodeURI(name) + "=[^&]+");
+  let arr = location.search.match(reg);
+  if (arr != null) {
+    return decodeURI(arr[0].substring(arr[0].search("=") + 1));
+  }
+  return "";
+}
+
+function createJsonFile(content, filename) {
+  let blob = new Blob([JSON.stringify(content)], { type: "application/json" });
+  let url = window.URL.createObjectURL(blob);
+  let a = document.createElement("a");
+  a.style.display = "none";
+  a.href = url;
+  a.download = filename;
+  a.click();
+  setTimeout(function () {
+    document.body.removeChild(a);
+    window.URL.revokeObjectURL(url);
+  }, 3000);
+}
+
+async function sleep(time) {
+  return new Promise((resolve) => setTimeout(resolve, time));
+}
+
+async function getMediaDevices() {
+  return await navigator.mediaDevices.enumerateDevices();
+}
+
+// new URLSearchParams
+// new URL
+// (new Date()).toISOString()
+export {
+  addClass,
+  removeClass,
+  hasClass,
+  setCookie,
+  getCookie,
+  encodeBase64,
+  decodeBase64,
+  getParameterValue,
+  sleep,
+  getMediaDevices,
+};