diff --git a/src/web/app/boot.js b/src/web/app/boot.js
index 5d3a6f0ec5..b224491c1f 100644
--- a/src/web/app/boot.js
+++ b/src/web/app/boot.js
@@ -28,17 +28,17 @@ require('fetch');
 
 // ↓ NodeList、HTMLCollectionで forEach を使えるようにする
 if (NodeList.prototype.forEach === undefined) {
-  NodeList.prototype.forEach = Array.prototype.forEach;
+	NodeList.prototype.forEach = Array.prototype.forEach;
 }
 if (HTMLCollection.prototype.forEach === undefined) {
-  HTMLCollection.prototype.forEach = Array.prototype.forEach;
+	HTMLCollection.prototype.forEach = Array.prototype.forEach;
 }
 
 // ↓ iOSでプライベートモードだとlocalStorageが使えないので既存のメソッドを上書きする
 try {
-  localStorage.setItem('kyoppie', 'yuppie');
+	localStorage.setItem('kyoppie', 'yuppie');
 } catch (e) {
-  Storage.prototype.setItem = () => { }; // noop
+	Storage.prototype.setItem = () => { }; // noop
 }
 
 // MAIN PROCESS
@@ -52,118 +52,118 @@ checkForUpdate();
 const i = (document.cookie.match(/i=(\w+)/) || [null, null])[1];
 
 if (i != null) {
-  log("ME: " + i);
+	log("ME: " + i);
 }
 
 // ユーザーをフェッチしてコールバックする
 module.exports = callback => {
 	// Get cached account data
-  let cachedMe = JSON.parse(localStorage.getItem('me'));
+	let cachedMe = JSON.parse(localStorage.getItem('me'));
 
-  if (cachedMe != null && cachedMe.data != null && cachedMe.data.cache) {
-    fetched(cachedMe);
+	if (cachedMe != null && cachedMe.data != null && cachedMe.data.cache) {
+		fetched(cachedMe);
 
 		// 後から新鮮なデータをフェッチ
-    fetchme(i, true, freshData => {
-      Object.assign(cachedMe, freshData);
-      cachedMe.trigger('updated');
-    });
-  } else {
+		fetchme(i, true, freshData => {
+			Object.assign(cachedMe, freshData);
+			cachedMe.trigger('updated');
+		});
+	} else {
 		// キャッシュ無効なのにキャッシュが残ってたら掃除
-    if (cachedMe != null) {
-      localStorage.removeItem('me');
-    }
-    fetchme(i, false, fetched);
-  }
+		if (cachedMe != null) {
+			localStorage.removeItem('me');
+		}
+		fetchme(i, false, fetched);
+	}
 
-  function fetched(me) {
-    if (me != null) {
-      riot.observable(me);
-      if (me.data.cache) {
-        localStorage.setItem('me', JSON.stringify(me));
-        me.on('updated', () => {
+	function fetched(me) {
+		if (me != null) {
+			riot.observable(me);
+			if (me.data.cache) {
+				localStorage.setItem('me', JSON.stringify(me));
+				me.on('updated', () => {
 					// キャッシュ更新
-          localStorage.setItem('me', JSON.stringify(me));
-        });
-      }
-      log("Fetched! Hello " + me.username + ".");
-    }
-    mixins(me);
-    const init = document.getElementById('init');
-    init.parentNode.removeChild(init);
-    const app = document.createElement('div');
-    app.setAttribute('id', 'app');
-    document.body.appendChild(app);
-    try {
-      callback(me);
-    } catch (e) {
-      panic(e);
-    }
-  }
+					localStorage.setItem('me', JSON.stringify(me));
+				});
+			}
+			log("Fetched! Hello " + me.username + ".");
+		}
+		mixins(me);
+		const init = document.getElementById('init');
+		init.parentNode.removeChild(init);
+		const app = document.createElement('div');
+		app.setAttribute('id', 'app');
+		document.body.appendChild(app);
+		try {
+			callback(me);
+		} catch (e) {
+			panic(e);
+		}
+	}
 };
 
 // ユーザーをフェッチしてコールバックする
 function fetchme(token, silent, cb) {
-  let me = null;
+	let me = null;
 
 	// Return when not signed in
-  if (token == null) {
-    return done();
-  }
+	if (token == null) {
+		return done();
+	}
 
 	// Fetch user
-  fetch(CONFIG.api.url + "/i", {
-    method: 'POST',
-    headers: {
-      'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8'
-    },
-    body: "i=" + token
-  }).then(res => {
+	fetch(CONFIG.api.url + "/i", {
+		method: 'POST',
+		headers: {
+			'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8'
+		},
+		body: "i=" + token
+	}).then(res => {
 		// When failed to authenticate user
-    if (res.status !== 200) {
-      signout();
-    }
-    res.json().then(i => {
-      me = i;
-      me.token = token;
+		if (res.status !== 200) {
+			signout();
+		}
+		res.json().then(i => {
+			me = i;
+			me.token = token;
 
 			// initialize it if user data is empty
-      if (me.data != null) {
-        done();
-      } else {
-        init();
-      }
-    });
-  }).catch(() => {
-    if (!silent) {
-      const info = document.body.appendChild(document.createElement('mk-core-error'));
-      riot.mount(info, {
-        retry: () => {
-          fetchme(token, false, cb);
-        }
-      });
+			if (me.data != null) {
+				done();
+			} else {
+				init();
+			}
+		});
+	}).catch(() => {
+		if (!silent) {
+			const info = document.body.appendChild(document.createElement('mk-core-error'));
+			riot.mount(info, {
+				retry: () => {
+					fetchme(token, false, cb);
+				}
+			});
 		}
-  });
+	});
 
-  function done() {
-    if (cb != null) {
-    	cb(me);
-    }
-  }
+	function done() {
+		if (cb != null) {
+			cb(me);
+		}
+	}
 
-  function init() {
-    var data, this$ = this;
-    data = generateDefaultUserdata();
-    api(token, 'i/appdata/set', {
-      data: JSON.stringify(data)
-    }).then(() => {
-      me.data = data;
-      done();
-    });
-  }
+	function init() {
+		var data, this$ = this;
+		data = generateDefaultUserdata();
+		api(token, 'i/appdata/set', {
+			data: JSON.stringify(data)
+		}).then(() => {
+			me.data = data;
+			done();
+		});
+	}
 }
 
 function panic(e) {
-  console.error(e);
-  document.body.innerHTML = '<div id="error"><p>致命的な問題が発生しました。</p></div>';
+	console.error(e);
+	document.body.innerHTML = '<div id="error"><p>致命的な問題が発生しました。</p></div>';
 }