diff --git a/src/web/app/auth/tags/form.tag b/src/web/app/auth/tags/form.tag
index 21a9a74048..619c71065e 100644
--- a/src/web/app/auth/tags/form.tag
+++ b/src/web/app/auth/tags/form.tag
@@ -114,13 +114,13 @@
 		this.cancel = () => {
 			this.api('auth/deny', {
 				token: @session.token
-			.then =>
+			}).then(() => {
 				this.trigger('denied');
 
 		this.accept = () => {
 			this.api('auth/accept', {
 				token: @session.token
-			.then =>
+			}).then(() => {
 				this.trigger('accepted');
 	</script>
 </mk-form>
diff --git a/src/web/app/auth/tags/index.tag b/src/web/app/auth/tags/index.tag
index 13abf07905..e52aeed4d2 100644
--- a/src/web/app/auth/tags/index.tag
+++ b/src/web/app/auth/tags/index.tag
@@ -110,7 +110,7 @@
 				if @session.app.is_authorized
 					this.api('auth/accept', {
 						token: @session.token
-					.then =>
+					}).then(() => {
 						@accepted!
 				else
 					this.state = 'waiting' 
diff --git a/src/web/app/common/scripts/contains.js b/src/web/app/common/scripts/contains.js
new file mode 100644
index 0000000000..fe73666193
--- /dev/null
+++ b/src/web/app/common/scripts/contains.js
@@ -0,0 +1,8 @@
+module.exports = function(parent, child) {
+	let node = child.parentNode;
+	while (node) {
+		if (node == parent) return true;
+		node = node.parentNode;
+	}
+	return false;
+}
diff --git a/src/web/app/common/tags/signin.tag b/src/web/app/common/tags/signin.tag
index 7b297b7b8e..e2b8736821 100644
--- a/src/web/app/common/tags/signin.tag
+++ b/src/web/app/common/tags/signin.tag
@@ -126,7 +126,7 @@
 			this.api('signin', {
 				username: this.refs.username.value
 				password: this.refs.password.value
-			.then =>
+			}).then(() => {
 				location.reload();
 			.catch =>
 				alert 'something happened'
diff --git a/src/web/app/common/tags/signup.tag b/src/web/app/common/tags/signup.tag
index 7646f8c861..39d4522e79 100644
--- a/src/web/app/common/tags/signup.tag
+++ b/src/web/app/common/tags/signup.tag
@@ -277,11 +277,11 @@
 				username: username,
 				password: password,
 				'g-recaptcha-response': grecaptcha.getResponse()
-			.then =>
+			}).then(() => {
 				this.api('signin', {
 					username: username
 					password: password
-				.then =>
+				}).then(() => {
 					location.href = CONFIG.url
 			.catch =>
 				alert '何らかの原因によりアカウントの作成に失敗しました。再度お試しください。'
diff --git a/src/web/app/desktop/tags/analog-clock.tag b/src/web/app/desktop/tags/analog-clock.tag
index ec627ec65f..4ac6d2281c 100644
--- a/src/web/app/desktop/tags/analog-clock.tag
+++ b/src/web/app/desktop/tags/analog-clock.tag
@@ -6,100 +6,92 @@
 				display block
 				width 256px
 				height 256px
-
 	</style>
 	<script>
+		class Vec2 {
+			constructor(x, y) {
+				this.x = x;
+				this.y = y;
+			}
+		}
+
 		this.on('mount', () => {
-			@draw!
-			this.clock = setInterval @draw, 1000ms
+			this.draw()
+			this.clock = setInterval(this.draw, 1000);
+		});
 
 		this.on('unmount', () => {
-			clearInterval @clock
+			clearInterval(this.clock);
+		});
 
 		this.draw = () => {
 			const now = new Date();
-			s = now.get-seconds!
-			m = now.getMinutes()
-			h = now.getHours()
+			const s = now.getSeconds();
+			const m = now.getMinutes();
+			const h = now.getHours();
 
-			vec2 = (x, y) ->
-				this.x = x
-				this.y = y
+			const ctx = this.refs.canvas.getContext('2d');
+			const canvW = this.refs.canvas.width;
+			const canvH = this.refs.canvas.height;
+			ctx.clearRect(0, 0, canvW, canvH);
 
-			ctx = this.refs.canvas.get-context '2d' 
-			canv-w = this.refs.canvas.width
-			canv-h = this.refs.canvas.height
-			ctx.clear-rect 0, 0, canv-w, canv-h
+			{ // 背景
+				const center = Math.min((canvW / 2), (canvH / 2));
+				const lineStart =    center * 0.90;
+				const shortLineEnd = center * 0.87;
+				const longLineEnd =  center * 0.84;
+				for (let i = 0; i < 60; i++) {
+					const angle = Math.PI * i / 30;
+					const uv = new Vec2(Math.sin(angle), -Math.cos(angle));
+					ctx.beginPath();
+					ctx.lineWidth = 1;
+					ctx.moveTo((canv-w / 2) + uv.x * lineStart, (canv-h / 2) + uv.y * lineStart);
+					if (i % 5 == 0) {
+						ctx.strokeStyle = 'rgba(255, 255, 255, 0.2)';
+						ctx.lineTo((canv-w / 2) + uv.x * longLineEnd, (canv-h / 2) + uv.y * longLineEnd);
+					} else {
+						ctx.strokeStyle = 'rgba(255, 255, 255, 0.1)';
+						ctx.lineTo((canv-w / 2) + uv.x * shortLineEnd, (canv-h / 2) + uv.y * shortLineEnd);
+					}
+					ctx.stroke();
+				}
+			}
 
-			// 背景
-			center = (Math.min (canv-w / 2), (canv-h / 2))
-			line-start = center * 0.90
-			line-end-short = center * 0.87
-			line-end-long = center * 0.84
-			for i from 0 to 59 by 1
-				angle = Math.PI * i / 30
-				uv = new vec2 (Math.sin angle), (-Math.cos angle)
-				ctx.begin-path!
-				ctx.line-width = 1
-				ctx.move-to do
-					(canv-w / 2) + uv.x * line-start
-					(canv-h / 2) + uv.y * line-start
-				if i % 5 == 0
-					ctx.stroke-style = 'rgba(255, 255, 255, 0.2)'
-					ctx.line-to do
-						(canv-w / 2) + uv.x * line-end-long
-						(canv-h / 2) + uv.y * line-end-long
-				else
-					ctx.stroke-style = 'rgba(255, 255, 255, 0.1)'
-					ctx.line-to do
-						(canv-w / 2) + uv.x * line-end-short
-						(canv-h / 2) + uv.y * line-end-short
-				ctx.stroke!
+			{ // 分
+				const angle = Math.PI * (m + s / 60) / 30;
+				const length = Math.min(canvW, canvH) / 2.6;
+				const uv = new vec2(Math.sin(angle), -Math.cos(angle));
+				ctx.beginPath();
+				ctx.strokeStyle = '#ffffff';
+				ctx.lineWidth = 2;
+				ctx.moveTo(canvW / 2 - uv.x * length / 5, canvH / 2 - uv.y * length / 5);
+				ctx.lineTo(canvW / 2 + uv.x * length,     canvH / 2 + uv.y * length);
+				ctx.stroke();
+			}
 
-			// 分
-			angle = Math.PI * (m + s / 60) / 30
-			length = (Math.min canv-w, canv-h) / 2.6
-			uv = new vec2 (Math.sin angle), (-Math.cos angle)
-			ctx.begin-path!
-			ctx.stroke-style = '#ffffff' 
-			ctx.line-width = 2
-			ctx.move-to do
-				(canv-w / 2) - uv.x * length / 5
-				(canv-h / 2) - uv.y * length / 5
-			ctx.line-to do
-				(canv-w / 2) + uv.x * length
-				(canv-h / 2) + uv.y * length
-			ctx.stroke!
+			{ // 時
+				const angle = Math.PI * (h % 12 + m / 60) / 6;
+				const length = Math.min(canvW, canvH) / 4;
+				const uv = new vec2(Math.sin(angle), -Math.cos(angle));
+				ctx.beginPath();
+				ctx.strokeStyle = CONFIG.themeColor;
+				ctx.lineWidth = 2;
+				ctx.moveTo(canvW / 2 - uv.x * length / 5, canvH / 2 - uv.y * length / 5);
+				ctx.lineTo(canvW / 2 + uv.x * length,     canvH / 2 + uv.y * length);
+				ctx.stroke();
+			}
 
-			// 時
-			angle = Math.PI * (h % 12 + m / 60) / 6
-			length = (Math.min canv-w, canv-h) / 4
-			uv = new vec2 (Math.sin angle), (-Math.cos angle)
-			ctx.begin-path!
-			#ctx.stroke-style = '#ffffff' 
-			ctx.stroke-style = CONFIG.theme-color
-			ctx.line-width = 2
-			ctx.move-to do
-				(canv-w / 2) - uv.x * length / 5
-				(canv-h / 2) - uv.y * length / 5
-			ctx.line-to do
-				(canv-w / 2) + uv.x * length
-				(canv-h / 2) + uv.y * length
-			ctx.stroke!
-
-			// 秒
-			angle = Math.PI * s / 30
-			length = (Math.min canv-w, canv-h) / 2.6
-			uv = new vec2 (Math.sin angle), (-Math.cos angle)
-			ctx.begin-path!
-			ctx.stroke-style = 'rgba(255, 255, 255, 0.5)'
-			ctx.line-width = 1
-			ctx.move-to do
-				(canv-w / 2) - uv.x * length / 5
-				(canv-h / 2) - uv.y * length / 5
-			ctx.line-to do
-				(canv-w / 2) + uv.x * length
-				(canv-h / 2) + uv.y * length
-			ctx.stroke!
+			{ // 秒
+				const angle = Math.PI * s / 30;
+				const length = Math.min(canvW, canvH) / 2.6;
+				const uv = new vec2(Math.sin(angle), -Math.cos(angle));
+				ctx.beginPath();
+				ctx.strokeStyle = 'rgba(255, 255, 255, 0.5)';
+				ctx.lineWidth = 1;
+				ctx.moveTo(canvW / 2 - uv.x * length / 5, canvH / 2 - uv.y * length / 5);
+				ctx.lineTo(canvW / 2 + uv.x * length,     canvH / 2 + uv.y * length);
+				ctx.stroke();
+			}
+		};
 	</script>
 </mk-analog-clock>
diff --git a/src/web/app/desktop/tags/autocomplete-suggestion.tag b/src/web/app/desktop/tags/autocomplete-suggestion.tag
index 40f5f57591..c7cc29dc19 100644
--- a/src/web/app/desktop/tags/autocomplete-suggestion.tag
+++ b/src/web/app/desktop/tags/autocomplete-suggestion.tag
@@ -80,108 +80,118 @@
 
 	</style>
 	<script>
+		const contains = require('../../common/scripts/contains');
+
 		this.mixin('api');
 
-		this.q = this.opts.q
-		this.textarea = this.opts.textarea
-		this.loading = true
-		this.users = []
-		this.select = -1
+		this.q = this.opts.q;
+		this.textarea = this.opts.textarea;
+		this.fetching = true;
+		this.users = [];
+		this.select = -1;
 
 		this.on('mount', () => {
-			@textarea.addEventListener 'keydown' this.on-keydown
+			this.textarea.addEventListener('keydown', this.onKeydown);
 
-			all = document.query-selector-all 'body *'
-			Array.prototype.forEach.call all, (el) =>
-				el.addEventListener 'mousedown' @mousedown
+			document.querySelectorAll('body *').forEach(el => {
+				el.addEventListener('mousedown', this.mousedown);
+			});
 
 			this.api('users/search_by_username', {
-				query: @q
-				limit: 30users
-			}).then((users) => {
-				this.users = users
-				this.loading = false
-				this.update();
-			.catch (err) =>
-				console.error err
+				query: this.q,
+				limit: 30
+			}).then(users => {
+				this.update({
+					fetching: false,
+					users: users
+				});
+			});
+		});
 
 		this.on('unmount', () => {
-			@textarea.removeEventListener 'keydown' this.on-keydown
+			this.textarea.removeEventListener('keydown', this.onKeydown);
 
-			all = document.query-selector-all 'body *'
-			Array.prototype.forEach.call all, (el) =>
-				el.removeEventListener 'mousedown' @mousedown
+			document.querySelectorAll('body *').forEach(el => {
+				el.removeEventListener('mousedown', this.mousedown);
+			});
+		});
 
-		this.mousedown = (e) => {
-			if (!contains this.root, e.target) and (this.root != e.target)
-				@close();
+		this.mousedown = e => {
+			if (!contains(this.root, e.target) && (this.root != e.target)) this.close();
+		};
 
-		this.on-click = (e) => {
-			@complete e.item
+		this.onClick = e => {
+			this.complete(e.item);
+		};
 
-		this.on-keydown = (e) => {
-			key = e.which
-			switch (key)
-				| 10, 13 => // Key[ENTER]
-					if @select != -1
-						e.preventDefault();
-						e.stopPropagation();
-						@complete this.users[@select]
-					else
-						@close();
-				| 27 => // Key[ESC]
-					e.preventDefault();
-					e.stopPropagation();
-					@close();
-				| 38 => // Key[↑]
-					if @select != -1
-						e.preventDefault();
-						e.stopPropagation();
-						@select-prev!
-					else
-						@close();
-				| 9, 40 => // Key[TAB] or Key[↓]
-					e.preventDefault();
-					e.stopPropagation();
-					@select-next!
-				| _ =>
-					@close();
+		this.onKeydown = e => {
+			const cancel = () => {
+				e.preventDefault();
+				e.stopPropagation();
+			};
 
-		this.select-next = () => {
-			@select++
+			switch (e.which) {
+				case 10: // [ENTER]
+				case 13: // [ENTER]
+					if (this.select !== -1) {
+						cancel();
+						this.complete(this.users[this.select]);
+					} else {
+						this.close();
+					}
+					break;
 
-			if @select >= this.users.length
-				this.select = 0
+				case 27: // [ESC]
+					cancel();
+					this.close();
+					break;
 
-			@apply-select!
+				case 38: // [↑]
+					if (this.select !== -1) {
+						cancel();
+						this.selectPrev();
+					} else {
+						this.close();
+					}
+					break;
 
-		this.select-prev = () => {
-			@select--
+				case 9: // [TAB]
+				case 40: // [↓]
+					cancel();
+					this.selectNext();
+					break;
 
-			if @select < 0
-				this.select = this.users.length - 1
+				default:
+					this.close();
+			}
+		};
 
-			@apply-select!
+		this.selectNext = () => {
+			if (++this.select >= this.users.length) this.select = 0;
+			this.applySelect();
+		};
 
-		this.apply-select = () => {
-			this.refs.users.children.forEach (el) =>
-				el.remove-attribute 'data-selected' 
+		this.selectPrev = () => {
+			if (--this.select < 0) this.select = this.users.length - 1;
+			this.applySelect();
+		};
 
-			this.refs.users.children[@select].setAttribute 'data-selected' \true
-			this.refs.users.children[@select].focus();
+		this.applySelect = () => {
+			this.refs.users.children.forEach(el => {
+				el.removeAttribute('data-selected');
+			});
 
-		this.complete = (user) => {
-			this.opts.complete user
+			this.refs.users.children[this.select].setAttribute('data-selected', 'true');
+			this.refs.users.children[this.select].focus();
+		};
+
+		this.complete = user => {
+			this.opts.complete(user);
+		};
 
 		this.close = () => {
 			this.opts.close();
+		};
 
-		function contains(parent, child)
-			node = child.parentNode
-			while node?
-				if node == parent
-					return true
-				node = node.parentNode
-			return false
 	</script>
 </mk-autocomplete-suggestion>
diff --git a/src/web/app/desktop/tags/big-follow-button.tag b/src/web/app/desktop/tags/big-follow-button.tag
index ba607c8372..309e6ce8ed 100644
--- a/src/web/app/desktop/tags/big-follow-button.tag
+++ b/src/web/app/desktop/tags/big-follow-button.tag
@@ -106,21 +106,21 @@
 			if this.user.is_following
 				this.api('following/delete', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = false
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 			else
 				this.api('following/create', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = true
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 	</script>
diff --git a/src/web/app/desktop/tags/contextmenu.tag b/src/web/app/desktop/tags/contextmenu.tag
index 92c8b71a2e..8df11c3819 100644
--- a/src/web/app/desktop/tags/contextmenu.tag
+++ b/src/web/app/desktop/tags/contextmenu.tag
@@ -1,4 +1,5 @@
-<mk-contextmenu><yield />
+<mk-contextmenu>
+	<yield />
 	<style>
 		:scope
 			$width = 240px
@@ -94,46 +95,45 @@
 
 	</style>
 	<script>
-		this.root.addEventListener 'contextmenu' (e) =>
+		const contains = require('../../common/scripts/contains');
+
+		this.root.addEventListener('contextmenu', e => {
 			e.preventDefault();
+		});
 
-		this.mousedown = (e) => {
+		this.mousedown = e => {
 			e.preventDefault();
-			if (!contains this.root, e.target) and (this.root != e.target)
-				@close();
-			return false
+			if (!contains(this.root, e.target) && (this.root != e.target)) this.close();
+			return false;
+		};
 
-		this.open = (pos) => {
-			all = document.query-selector-all 'body *'
-			Array.prototype.forEach.call all, (el) =>
-				el.addEventListener 'mousedown' @mousedown
-			this.root.style.display = 'block' 
-			this.root.style.left = pos.x + 'px' 
-			this.root.style.top = pos.y + 'px' 
+		this.open = pos => {
+			document.querySelectorAll('body *').forEach(el => {
+				el.addEventListener('mousedown', this.mousedown);
+			});
 
-			Velocity(this.root, 'finish' true
-			Velocity(this.root, { opacity: 0 } 0ms
+			this.root.style.display = 'block';
+			this.root.style.left = pos.x + 'px';
+			this.root.style.top = pos.y + 'px';
+
+			Velocity(this.root, 'finish', true);
+			Velocity(this.root, { opacity: 0 }, 0);
 			Velocity(this.root, {
 				opacity: 1
 			}, {
-				queue: false
-				duration: 100ms
-				easing: 'linear' 
-			}
+				queue: false,
+				duration: 100,
+				easing: 'linear'
+			});
+		};
 
 		this.close = () => {
-			all = document.query-selector-all 'body *'
-			Array.prototype.forEach.call all, (el) =>
-				el.removeEventListener 'mousedown' @mousedown
+			document.querySelectorAll('body *').forEach(el => {
+				el.removeEventListener('mousedown', this.mousedown);
+			});
+
 			this.trigger('closed');
 			this.unmount();
-
-		function contains(parent, child)
-			node = child.parentNode
-			while (node != null)
-				if (node == parent)
-					return true
-				node = node.parentNode
-			return false
+		};
 	</script>
 </mk-contextmenu>
diff --git a/src/web/app/desktop/tags/dialog.tag b/src/web/app/desktop/tags/dialog.tag
index 61a40e7b39..c0df0b330f 100644
--- a/src/web/app/desktop/tags/dialog.tag
+++ b/src/web/app/desktop/tags/dialog.tag
@@ -79,69 +79,72 @@
 
 	</style>
 	<script>
-		this.can-through = if opts.can-through? then opts.can-through else true
-		this.opts.buttons.forEach (button) =>
-			button._onclick = =>
-				if button.onclick?
-					button.onclick();
-				@close();
+		this.canThrough = opts.canThrough != null ? opts.canThrough : true;
+		this.opts.buttons.forEach(button => {
+			button._onclick = () => {
+				if (button.onclick) button.onclick();
+				this.close();
+			};
+		});
 
 		this.on('mount', () => {
-			this.refs.header.innerHTML = this.opts.title
-			this.refs.body.innerHTML = this.opts.text
+			this.refs.header.innerHTML = this.opts.title;
+			this.refs.body.innerHTML = this.opts.text;
 
-			this.refs.bg.style.pointer-events = 'auto' 
-			Velocity(this.refs.bg, 'finish' true
+			this.refs.bg.style.pointerEvents = 'auto';
+			Velocity(this.refs.bg, 'finish', true);
 			Velocity(this.refs.bg, {
 				opacity: 1
 			}, {
-				queue: false
-				duration: 100ms
-				easing: 'linear' 
-			}
+				queue: false,
+				duration: 100,
+				easing: 'linear'
+			});
 
 			Velocity(this.refs.main, {
-				opacity: 0
+				opacity: 0,
 				scale: 1.2
 			}, {
 				duration: 0
-			}
+			});
 			Velocity(this.refs.main, {
-				opacity: 1
+				opacity: 1,
 				scale: 1
 			}, {
-				duration: 300ms
+				duration: 300,
 				easing: [ 0, 0.5, 0.5, 1 ]
-			}
+			});
+		});
 
 		this.close = () => {
-			this.refs.bg.style.pointer-events = 'none' 
-			Velocity(this.refs.bg, 'finish' true
+			this.refs.bg.style.pointerEvents = 'none';
+			Velocity(this.refs.bg, 'finish', true);
 			Velocity(this.refs.bg, {
 				opacity: 0
 			}, {
-				queue: false
-				duration: 300ms
+				queue: false,
+				duration: 300,
 				easing: 'linear' 
-			}
+			});
 
-			this.refs.main.style.pointer-events = 'none' 
-			Velocity(this.refs.main, 'finish' true
+			this.refs.main.style.pointerEvents = 'none';
+			Velocity(this.refs.main, 'finish', true);
 			Velocity(this.refs.main, {
-				opacity: 0
+				opacity: 0,
 				scale: 0.8
 			}, {
-				queue: false
-				duration: 300ms
-				easing: [ 0.5, -0.5, 1, 0.5 ]
-				complete: =>
-					this.unmount();
-			}
+				queue: false,
+				duration: 300,
+				easing: [ 0.5, -0.5, 1, 0.5 ],
+				complete: () => this.unmount()
+			});
+		};
 
-		this.bg-click = () => {
-			if @can-through
-				if this.opts.on-through?
-					this.opts.on-through!
-				@close();
+		this.bgClick = () => {
+			if (this.canThrough) {
+				if (this.opts.onThrough) this.opts.onThrough();
+				this.close();
+			}
+		};
 	</script>
 </mk-dialog>
diff --git a/src/web/app/desktop/tags/drive/browser.tag b/src/web/app/desktop/tags/drive/browser.tag
index 13019dd160..51c26943a2 100644
--- a/src/web/app/desktop/tags/drive/browser.tag
+++ b/src/web/app/desktop/tags/drive/browser.tag
@@ -408,7 +408,7 @@
 				this.api('drive/files/update', {
 					file_id: file
 					folder_id: if this.folder? then this.folder.id else null
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err, text-status) =>
 					console.error err
@@ -425,7 +425,7 @@
 				this.api('drive/folders/update', {
 					folder_id: folder
 					parent_id: if this.folder? then this.folder.id else null
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err) =>
 					if err == 'detected-circular-definition'
diff --git a/src/web/app/desktop/tags/drive/file-contextmenu.tag b/src/web/app/desktop/tags/drive/file-contextmenu.tag
index 9a615a9022..933ae6db01 100644
--- a/src/web/app/desktop/tags/drive/file-contextmenu.tag
+++ b/src/web/app/desktop/tags/drive/file-contextmenu.tag
@@ -68,7 +68,7 @@
 			this.api('drive/files/update', {
 				file_id: this.file.id
 				name: name
-			.then =>
+			}).then(() => {
 				// something
 			.catch (err) =>
 				console.error err
diff --git a/src/web/app/desktop/tags/drive/folder-contextmenu.tag b/src/web/app/desktop/tags/drive/folder-contextmenu.tag
index 833eff42e2..582aa5e52c 100644
--- a/src/web/app/desktop/tags/drive/folder-contextmenu.tag
+++ b/src/web/app/desktop/tags/drive/folder-contextmenu.tag
@@ -54,7 +54,7 @@
 			this.api('drive/folders/update', {
 				folder_id: this.folder.id
 				name: name
-			.then =>
+			}).then(() => {
 				// something
 			.catch (err) =>
 				console.error err
diff --git a/src/web/app/desktop/tags/drive/folder.tag b/src/web/app/desktop/tags/drive/folder.tag
index fff3c13ebe..c9bc5d7f04 100644
--- a/src/web/app/desktop/tags/drive/folder.tag
+++ b/src/web/app/desktop/tags/drive/folder.tag
@@ -118,7 +118,7 @@
 				this.api('drive/files/update', {
 					file_id: file
 					folder_id: this.folder.id
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err, text-status) =>
 					console.error err
@@ -133,7 +133,7 @@
 				this.api('drive/folders/update', {
 					folder_id: folder
 					parent_id: this.folder.id
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err) =>
 					if err == 'detected-circular-definition'
diff --git a/src/web/app/desktop/tags/drive/nav-folder.tag b/src/web/app/desktop/tags/drive/nav-folder.tag
index 3f57fc1293..b485ddb53e 100644
--- a/src/web/app/desktop/tags/drive/nav-folder.tag
+++ b/src/web/app/desktop/tags/drive/nav-folder.tag
@@ -72,7 +72,7 @@
 				this.api('drive/files/update', {
 					file_id: file
 					folder_id: if this.folder? then this.folder.id else null
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err, text-status) =>
 					console.error err
@@ -87,7 +87,7 @@
 				this.api('drive/folders/update', {
 					folder_id: folder
 					parent_id: if this.folder? then this.folder.id else null
-				.then =>
+				}).then(() => {
 					// something
 				.catch (err, text-status) =>
 					console.error err
diff --git a/src/web/app/desktop/tags/ellipsis-icon.tag b/src/web/app/desktop/tags/ellipsis-icon.tag
index 731c2525f1..8462bfc4af 100644
--- a/src/web/app/desktop/tags/ellipsis-icon.tag
+++ b/src/web/app/desktop/tags/ellipsis-icon.tag
@@ -33,9 +33,5 @@
 				40%
 					transform scale(1)
 
-			
-
-			
-
 	</style>
 </mk-ellipsis-icon>
diff --git a/src/web/app/desktop/tags/follow-button.tag b/src/web/app/desktop/tags/follow-button.tag
index 7b5ab7d0e4..64055a158f 100644
--- a/src/web/app/desktop/tags/follow-button.tag
+++ b/src/web/app/desktop/tags/follow-button.tag
@@ -103,21 +103,21 @@
 			if this.user.is_following
 				this.api('following/delete', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = false
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 			else
 				this.api('following/create', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = true
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 	</script>
diff --git a/src/web/app/desktop/tags/go-top.tag b/src/web/app/desktop/tags/go-top.tag
deleted file mode 100644
index cb75c04807..0000000000
--- a/src/web/app/desktop/tags/go-top.tag
+++ /dev/null
@@ -1,14 +0,0 @@
-<mk-go-top>
-	<button class="hidden" title="一番上へ"><i class="fa fa-angle-up"></i></button>
-	<script>
-		window.addEventListener 'load' this.on-scroll
-		window.addEventListener 'scroll' this.on-scroll
-		window.addEventListener 'resize' this.on-scroll
-
-		this.on-scroll = () => {
-			if $ window .scroll-top! > 500px
-				@remove-class 'hidden' 
-			else
-				@add-class 'hidden' 
-	</script>
-</mk-go-top>
diff --git a/src/web/app/desktop/tags/images-viewer.tag b/src/web/app/desktop/tags/images-viewer.tag
index 986debab4f..8d10ec6564 100644
--- a/src/web/app/desktop/tags/images-viewer.tag
+++ b/src/web/app/desktop/tags/images-viewer.tag
@@ -39,7 +39,7 @@
 
 		this.click = () => {
 			dialog = document.body.appendChild(document.createElement('mk-image-dialog'));
- 			riot.mount dialog, do
+			riot.mount dialog, do
 				image: @image
 	</script>
 </mk-images-viewer>
diff --git a/src/web/app/desktop/tags/index.js b/src/web/app/desktop/tags/index.js
index ed100ef75c..a90e42211d 100644
--- a/src/web/app/desktop/tags/index.js
+++ b/src/web/app/desktop/tags/index.js
@@ -16,7 +16,6 @@ require('./crop-window.tag');
 require('./settings.tag');
 require('./settings-window.tag');
 require('./analog-clock.tag');
-require('./go-top.tag');
 require('./ui-header.tag');
 require('./ui-header-account.tag');
 require('./ui-header-notifications.tag');
diff --git a/src/web/app/desktop/tags/input-dialog.tag b/src/web/app/desktop/tags/input-dialog.tag
index dbfd1cfc70..aa417f0a7e 100644
--- a/src/web/app/desktop/tags/input-dialog.tag
+++ b/src/web/app/desktop/tags/input-dialog.tag
@@ -1,13 +1,17 @@
 <mk-input-dialog>
-	<mk-window ref="window" is-modal={ true } width={ '500px' }><yield to="header"><i class="fa fa-i-cursor"></i>{ parent.title }</yield>
-<yield to="content">
-		<div class="body">
-			<input ref="text" oninput={ parent.update } onkeydown={ parent.onKeydown } placeholder={ parent.placeholder }/>
-		</div>
-		<div class="action">
-			<button class="cancel" onclick={ parent.cancel }>キャンセル</button>
-			<button class="ok" disabled={ !parent.allowEmpty && refs.text.value.length == 0 } onclick={ parent.ok }>決定</button>
-		</div></yield>
+	<mk-window ref="window" is-modal={ true } width={ '500px' }>
+		<yield to="header">
+			<i class="fa fa-i-cursor"></i>{ parent.title }
+		</yield>
+		<yield to="content">
+			<div class="body">
+				<input ref="text" oninput={ parent.update } onkeydown={ parent.onKeydown } placeholder={ parent.placeholder }/>
+			</div>
+			<div class="action">
+				<button class="cancel" onclick={ parent.cancel }>キャンセル</button>
+				<button class="ok" disabled={ !parent.allowEmpty && refs.text.value.length == 0 } onclick={ parent.ok }>決定</button>
+			</div>
+		</yield>
 	</mk-window>
 	<style>
 		:scope
@@ -116,18 +120,17 @@
 
 	</style>
 	<script>
-		this.done = false
+		this.done = false;
 
-		this.title = this.opts.title
-		this.placeholder = this.opts.placeholder
-		this.default = this.opts.default
-		this.allow-empty = if this.opts.allow-empty? then this.opts.allow-empty else true
+		this.title = this.opts.title;
+		this.placeholder = this.opts.placeholder;
+		this.default = this.opts.default;
+		this.allowEmpty = this.opts.allowEmpty != null ? this.opts.allowEmpty : true;
 
 		this.on('mount', () => {
-			this.text = this.refs.window.refs.text
-			if @default?
-				@text.value = @default
-			@text.focus();
+			this.text = this.refs.window.refs.text;
+			if (this.default) this.text.value = this.default;
+			this.text.focus();
 
 			this.refs.window.on('closing', () => {
 				if @done
@@ -138,6 +141,7 @@
 
 			this.refs.window.on('closed', () => {
 				this.unmount();
+			});
 
 		this.cancel = () => {
 			this.done = false
@@ -148,7 +152,7 @@
 			this.done = true
 			this.refs.window.close();
 
-		this.on-keydown = (e) => {
+		this.onKeydown = (e) => {
 			if e.which == 13 // Enter
 				e.preventDefault();
 				e.stopPropagation();
diff --git a/src/web/app/desktop/tags/post-detail-sub.tag b/src/web/app/desktop/tags/post-detail-sub.tag
index f5fec6f6a5..24feda9be3 100644
--- a/src/web/app/desktop/tags/post-detail-sub.tag
+++ b/src/web/app/desktop/tags/post-detail-sub.tag
@@ -127,13 +127,13 @@
 			if this.post.is_liked
 				this.api('posts/likes/delete', {
 					post_id: this.post.id
-				.then =>
+				}).then(() => {
 					this.post.is_liked = false
 					this.update();
 			else
 				this.api('posts/likes/create', {
 					post_id: this.post.id
-				.then =>
+				}).then(() => {
 					this.post.is_liked = true
 					this.update();
 	</script>
diff --git a/src/web/app/desktop/tags/post-detail.tag b/src/web/app/desktop/tags/post-detail.tag
index 3b5671452a..00426ea9bb 100644
--- a/src/web/app/desktop/tags/post-detail.tag
+++ b/src/web/app/desktop/tags/post-detail.tag
@@ -412,13 +412,13 @@
 			if this.p.is_liked
 				this.api('posts/likes/delete', {
 					post_id: this.p.id
-				.then =>
+				}).then(() => {
 					this.p.is_liked = false
 					this.update();
 			else
 				this.api('posts/likes/create', {
 					post_id: this.p.id
-				.then =>
+				}).then(() => {
 					this.p.is_liked = true
 					this.update();
 
diff --git a/src/web/app/desktop/tags/post-form.tag b/src/web/app/desktop/tags/post-form.tag
index fe435c4e4f..cb1693420c 100644
--- a/src/web/app/desktop/tags/post-form.tag
+++ b/src/web/app/desktop/tags/post-form.tag
@@ -455,7 +455,7 @@
 			.catch (err) =>
 				console.error err
 				@notify '投稿できませんでした'
-			.then =>
+			}).then(() => {
 				this.wait = false
 				this.update();
 
diff --git a/src/web/app/desktop/tags/repost-form.tag b/src/web/app/desktop/tags/repost-form.tag
index c3e3e02dfe..7d309bf754 100644
--- a/src/web/app/desktop/tags/repost-form.tag
+++ b/src/web/app/desktop/tags/repost-form.tag
@@ -127,14 +127,14 @@
 			this.wait = true
 			this.api('posts/create', {
 				repost_id: this.opts.post.id
-				text: if @quote then this.refs.text.value else undefined
+				text: if this.quote then this.refs.text.value else undefined
 			}).then((data) => {
 				this.trigger('posted');
 				@notify 'Repostしました！'
 			.catch (err) =>
 				console.error err
 				@notify 'Repostできませんでした'
-			.then =>
+			}).then(() => {
 				this.wait = false
 				this.update();
 
diff --git a/src/web/app/desktop/tags/search-posts.tag b/src/web/app/desktop/tags/search-posts.tag
index bad055eb04..248b8cc87d 100644
--- a/src/web/app/desktop/tags/search-posts.tag
+++ b/src/web/app/desktop/tags/search-posts.tag
@@ -42,7 +42,7 @@
 			window.addEventListener 'scroll' this.on-scroll
 
 			this.api('posts/search', {
-				query: @query
+				query: this.query
 			}).then((posts) => {
 				this.is-loading = false
 				this.is-empty = posts.length == 0
@@ -68,7 +68,7 @@
 			this.more-loading = true
 			this.update();
 			this.api('posts/search', {
-				query: @query
+				query: this.query
 				page: this.page + 1
 			}).then((posts) => {
 				this.more-loading = false
diff --git a/src/web/app/desktop/tags/sub-post-content.tag b/src/web/app/desktop/tags/sub-post-content.tag
index 8d4a06b49d..e0509ab7d4 100644
--- a/src/web/app/desktop/tags/sub-post-content.tag
+++ b/src/web/app/desktop/tags/sub-post-content.tag
@@ -1,5 +1,11 @@
 <mk-sub-post-content>
-	<div class="body"><a class="reply" if={ post.reply_to_id }><i class="fa fa-reply"></i></a><span ref="text"></span><a class="quote" if={ post.repost_id } href={ '/post:' + post.repost_id }>RP: ...</a></div>
+	<div class="body">
+		<a class="reply" if={ post.reply_to_id }>
+			<i class="fa fa-reply"></i>
+		</a>
+		<span ref="text"></span>
+		<a class="quote" if={ post.repost_id } href={ '/post:' + post.repost_id }>RP: ...</a>
+	</div>
 	<details if={ post.media }>
 		<summary>({ post.media.length }つのメディア)</summary>
 		<mk-images-viewer images={ post.media }></mk-images-viewer>
@@ -31,15 +37,17 @@
 		this.mixin('text');
 		this.mixin('user-preview');
 
-		this.post = this.opts.post
+		this.post = this.opts.post;
 
 		this.on('mount', () => {
-			if this.post.text?
-				tokens = @analyze this.post.text
-				this.refs.text.innerHTML = @compile tokens, false
+			if (this.post.text) {
+				const tokens = this.analyze(this.post.text);
+				this.refs.text.innerHTML = this.compile(tokens, false);
 
-				this.refs.text.children.forEach (e) =>
-					if e.tag-name == 'MK-URL' 
-						riot.mount e
+				this.refs.text.children.forEach(e => {
+					if (e.tagName == 'MK-URL') riot.mount(e);
+				});
+			}
+		});
 	</script>
 </mk-sub-post-content>
diff --git a/src/web/app/desktop/tags/timeline-post.tag b/src/web/app/desktop/tags/timeline-post.tag
index 5b656f812d..440d5d9f42 100644
--- a/src/web/app/desktop/tags/timeline-post.tag
+++ b/src/web/app/desktop/tags/timeline-post.tag
@@ -324,7 +324,7 @@
 		this.mixin('NotImplementedException');
 
 		this.post = this.opts.post;
-		this.isRepost = this.post.repost != null && this.post.text == null;
+		this.isRepost = this.post.repost && this.post.text == null;
 		this.p = this.isRepost ? this.post.repost : this.post;
 
 		this.title = this.dateStringify(this.p.created_at);
@@ -354,58 +354,87 @@
 		});
 
 		this.reply = () => {
-			form = document.body.appendChild(document.createElement('mk-post-form-window'));
- 			riot.mount form, do
+			riot.mount(document.body.appendChild(document.createElement('mk-post-form-window')), {
 				reply: this.p
+			});
+		};
 
 		this.repost = () => {
-			form = document.body.appendChild(document.createElement('mk-repost-form-window'));
- 			riot.mount form, do
+			riot.mount(document.body.appendChild(document.createElement('mk-repost-form-window')), {
 				post: this.p
+			});
+		};
 
 		this.like = () => {
-			if this.p.is_liked
+			if (this.p.is_liked) {
 				this.api('posts/likes/delete', {
 					post_id: this.p.id
-				.then =>
-					this.p.is_liked = false
+				}).then(() => {
+					this.p.is_liked = false;
 					this.update();
-			else
+				});
+			} else {
 				this.api('posts/likes/create', {
 					post_id: this.p.id
-				.then =>
-					this.p.is_liked = true
+				}).then(() => {
+					this.p.is_liked = true;
 					this.update();
+				});
+			}
+		};
 
-		this.toggle-detail = () => {
-			this.is-detail-opened = !@is-detail-opened
-			this.update();
+		this.toggleDetail = () => {
+			this.update({
+				isDetailOpened: !this.isDetailOpened
+			});
+		};
 
-		this.on-key-down = (e) => {
-			should-be-cancel = true
-			switch
-			| e.which == 38 or e.which == 74 or (e.which == 9 and e.shift-key) => // ↑, j or Shift+Tab
-				focus this.root, (e) -> e.previousElementSibling
-			| e.which == 40 or e.which == 75 or e.which == 9 => // ↓, k or Tab
-				focus this.root, (e) -> e.nextElementSibling
-			| e.which == 81 or e.which == 69 => // q or e
-				@repost!
-			| e.which == 70 or e.which == 76 => // f or l
-				@like!
-			| e.which == 82 => // r
-				@reply!
-			| _ =>
-				should-be-cancel = false
+		this.onKeyDown = e => {
+			let shouldBeCancel = true;
 
-			if should-be-cancel
-				e.preventDefault();
+			switch (true) {
+				case e.which == 38: // [↑]
+				case e.which == 74: // [j]
+				case e.which == 9 && e.shiftKey: // [Shift] + [Tab]
+					focus(this.root, e => e.previousElementSibling);
+					break;
 
-		function focus(el, fn)
-			target = fn el
-			if target?
-				if target.has-attribute 'tabindex' 
+				case e.which == 40: // [↓]
+				case e.which == 75: // [k]
+				case e.which == 9: // [Tab]
+					focus(this.root, e => e.nextElementSibling);
+					break;
+
+				case e.which == 81: // [q]
+				case e.which == 69: // [e]
+					this.repost();
+					break;
+
+				case e.which == 70: // [f]
+				case e.which == 76: // [l]
+					this.like();
+					break;
+
+				case e.which == 82: // [r]
+					this.reply();
+					break;
+				
+				default:
+					shouldBeCancel = false;
+			}
+
+			if (shouldBeCancel) e.preventDefault();
+		};
+
+		function focus(el, fn) {
+			const target = fn(el);
+			if (target) {
+				if (target.hasAttribute('tabindex')) {
 					target.focus();
-				else
-					focus target, fn
+				} else {
+					focus(target, fn);
+				}
+			}
+		}
 	</script>
 </mk-timeline-post>
diff --git a/src/web/app/desktop/tags/window.tag b/src/web/app/desktop/tags/window.tag
index 33bb244fa7..bd9df88231 100644
--- a/src/web/app/desktop/tags/window.tag
+++ b/src/web/app/desktop/tags/window.tag
@@ -501,7 +501,7 @@
 		this.ondragover = (e) => {
 			e.dataTransfer.dropEffect = 'none' 
 
-		this.on-keydown = (e) => {
+		this.onKeydown = (e) => {
 			if e.which == 27 // Esc
 				if @can-close
 					e.preventDefault();
diff --git a/src/web/app/dev/tags/new-app-form.tag b/src/web/app/dev/tags/new-app-form.tag
index 6be1c54487..c75eec37dd 100644
--- a/src/web/app/dev/tags/new-app-form.tag
+++ b/src/web/app/dev/tags/new-app-form.tag
@@ -233,7 +233,7 @@
 				description: description
 				callback_url: cb
 				permission: permission.join ',' 
-			.then =>
+			}).then(() => {
 				location.href = '/apps'
 			.catch =>
 				alert 'アプリの作成に失敗しました。再度お試しください。'
diff --git a/src/web/app/mobile/tags/drive/file-viewer.tag b/src/web/app/mobile/tags/drive/file-viewer.tag
index 5f2c5f61fb..e91a451c0d 100644
--- a/src/web/app/mobile/tags/drive/file-viewer.tag
+++ b/src/web/app/mobile/tags/drive/file-viewer.tag
@@ -192,9 +192,9 @@
 			name = window.prompt '名前を変更' this.file.name
 			if name? and name != '' and name != this.file.name
 				this.api('drive/files/update', {
-					file_id: this.file.id
+					file_id: this.file.id,
 					name: name
-				.then =>
+				}).then(() => {
 					this.parent.cf this.file, true
 
 	</script>
diff --git a/src/web/app/mobile/tags/follow-button.tag b/src/web/app/mobile/tags/follow-button.tag
index ecd0dc594d..43fcc3499c 100644
--- a/src/web/app/mobile/tags/follow-button.tag
+++ b/src/web/app/mobile/tags/follow-button.tag
@@ -84,21 +84,21 @@
 			if this.user.is_following
 				this.api('following/delete', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = false
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 			else
 				this.api('following/create', {
 					user_id: this.user.id
-				.then =>
+				}).then(() => {
 					this.user.is_following = true
 				.catch (err) ->
 					console.error err
-				.then =>
+				}).then(() => {
 					this.wait = false
 					this.update();
 	</script>
diff --git a/src/web/app/mobile/tags/post-detail.tag b/src/web/app/mobile/tags/post-detail.tag
index 61983a1592..2b4bef1da3 100644
--- a/src/web/app/mobile/tags/post-detail.tag
+++ b/src/web/app/mobile/tags/post-detail.tag
@@ -406,13 +406,13 @@
 			if this.p.is_liked
 				this.api('posts/likes/delete', {
 					post_id: this.p.id
-				.then =>
+				}).then(() => {
 					this.p.is_liked = false
 					this.update();
 			else
 				this.api('posts/likes/create', {
 					post_id: this.p.id
-				.then =>
+				}).then(() => {
 					this.p.is_liked = true
 					this.update();
 
diff --git a/src/web/app/mobile/tags/search-posts.tag b/src/web/app/mobile/tags/search-posts.tag
index 83c4b9cfb4..2dbb162d7b 100644
--- a/src/web/app/mobile/tags/search-posts.tag
+++ b/src/web/app/mobile/tags/search-posts.tag
@@ -9,24 +9,24 @@
 	<script>
 		this.mixin('api');
 
-		this.max = 30
-		this.offset = 0
+		this.max = 30;
+		this.offset = 0;
 
-		this.query = this.opts.query
-		this.with-media = this.opts.with-media
+		this.query = this.opts.query;
+		this.withMedia = this.opts.withMedia;
 
 		this.init = new Promise (res, rej) =>
 			this.api('posts/search', {
-				query: @query
-			}).then((posts) => {
+				query: this.query
+			}).then(posts => {
 				res posts
 				this.trigger('loaded');
 
 		this.more = () => {
-			@offset += @max
+			this.offset += this.max;
 			this.api('posts/search', {
-				query: @query
-				max: @max
-				offset: @offset
+				query: this.query
+				max: this.max
+				offset: this.offset
 	</script>
 </mk-search-posts>
diff --git a/src/web/app/mobile/tags/user-timeline.tag b/src/web/app/mobile/tags/user-timeline.tag
index 2d3716b848..71fb1ac272 100644
--- a/src/web/app/mobile/tags/user-timeline.tag
+++ b/src/web/app/mobile/tags/user-timeline.tag
@@ -11,21 +11,21 @@
 	<script>
 		this.mixin('api');
 
-		this.user = this.opts.user
-		this.with-media = this.opts.with-media
+		this.user = this.opts.user;
+		this.withMedia = this.opts.withMedia;
 
 		this.init = new Promise (res, rej) =>
 			this.api('users/posts', {
 				user_id: this.user.id
-				with_media: @with-media
-			}).then((posts) => {
+				with_media: @withMedia
+			}).then(posts => {
 				res posts
 				this.trigger('loaded');
 
 		this.more = () => {
 			this.api('users/posts', {
 				user_id: this.user.id
-				with_media: @with-media
+				with_media: this.withMedia
 				max_id: this.refs.timeline.tail!.id
 	</script>
 </mk-user-timeline>