diff --git a/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts b/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
index 82d0b9e40f..75a1d7c25f 100644
--- a/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
+++ b/src/compiler/compile/render_dom/wrappers/Element/Attribute.ts
@@ -1,13 +1,13 @@
-import Attribute from "../../../nodes/Attribute";
-import Block from "../../Block";
-import fix_attribute_casing from "./fix_attribute_casing";
-import ElementWrapper from "./index";
-import { string_literal } from "../../../utils/stringify";
-import { b, x } from "code-red";
-import Expression from "../../../nodes/shared/Expression";
-import Text from "../../../nodes/Text";
-import handle_select_value_binding from "./handle_select_value_binding";
-import { Identifier, Node } from "estree";
+import Attribute from '../../../nodes/Attribute';
+import Block from '../../Block';
+import fix_attribute_casing from './fix_attribute_casing';
+import ElementWrapper from './index';
+import { string_literal } from '../../../utils/stringify';
+import { b, x } from 'code-red';
+import Expression from '../../../nodes/shared/Expression';
+import Text from '../../../nodes/Text';
+import handle_select_value_binding from './handle_select_value_binding';
+import { Identifier, Node } from 'estree';
 
 export class BaseAttributeWrapper {
 	node: Attribute;
@@ -46,27 +46,22 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 
 		if (node.dependencies.size > 0) {
 			// special case — <option value={foo}> — see below
-			if (this.parent.node.name === "option" && node.name === "value") {
+			if (this.parent.node.name === 'option' && node.name === 'value') {
 				let select: ElementWrapper = this.parent;
-				while (
-					select &&
-					(select.node.type !== "Element" || select.node.name !== "select")
-				)
+				while (select && (select.node.type !== 'Element' || select.node.name !== 'select'))
 					// @ts-ignore todo: doublecheck this, but looks to be correct
 					select = select.parent;
 
 				if (select && select.select_binding_dependencies) {
-					select.select_binding_dependencies.forEach((prop) => {
+					select.select_binding_dependencies.forEach(prop => {
 						this.node.dependencies.forEach((dependency: string) => {
-							this.parent.renderer.component.indirect_dependencies
-								.get(prop)
-								.add(dependency);
+							this.parent.renderer.component.indirect_dependencies.get(prop).add(dependency);
 						});
 					});
 				}
 			}
 
-			if (node.name === "value") {
+			if (node.name === 'value') {
 				handle_select_value_binding(this, node.dependencies);
 			}
 		}
@@ -75,38 +70,28 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		this.metadata = this.get_metadata();
 		this.is_indirectly_bound_value = is_indirectly_bound_value(this);
 		this.property_name = this.is_indirectly_bound_value
-			? "__value"
+			? '__value'
 			: this.metadata && this.metadata.property_name;
-		this.is_src = this.name === "src"; // TODO retire this exception in favour of https://github.com/sveltejs/svelte/issues/3750
-		this.is_select_value_attribute =
-			this.name === "value" && this.parent.node.name === "select";
-		this.is_input_value =
-			this.name === "value" && this.parent.node.name === "input";
+		this.is_src = this.name === 'src'; // TODO retire this exception in favour of https://github.com/sveltejs/svelte/issues/3750
+		this.is_select_value_attribute = this.name === 'value' && this.parent.node.name === 'select';
+		this.is_input_value = this.name === 'value' && this.parent.node.name === 'input';
 		this.should_cache = should_cache(this);
 	}
 
 	render(block: Block) {
 		const element = this.parent;
-		const {
-			name,
-			property_name,
-			should_cache,
-			is_indirectly_bound_value,
-		} = this;
+		const { name, property_name, should_cache, is_indirectly_bound_value } = this;
 
 		// xlink is a special case... we could maybe extend this to generic
 		// namespaced attributes but I'm not sure that's applicable in
 		// HTML5?
 		const method = /-/.test(element.node.name)
-			? "@set_custom_element_data"
-			: name.slice(0, 6) === "xlink:"
-			? "@xlink_attr"
-			: "@attr";
+			? '@set_custom_element_data'
+			: name.slice(0, 6) === 'xlink:'
+				? '@xlink_attr'
+				: '@attr';
 
-		const is_legacy_input_type =
-			element.renderer.component.compile_options.legacy &&
-			name === "type" &&
-			this.parent.node.name === "input";
+		const is_legacy_input_type = element.renderer.component.compile_options.legacy && name === 'type' && this.parent.node.name === 'input';
 
 		const dependencies = this.get_dependencies();
 		const value = this.get_value(block);
@@ -114,27 +99,25 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		let updater;
 		const init = this.get_init(block, value);
 
-		// Set inputs value default to '' if undefined
-		if (name == "value") {
-			block.chunks.mount.push(b`@set_input_value(${element.var}, ${value});`);
-		}
-
 		if (is_legacy_input_type) {
-			block.chunks.hydrate.push(b`@set_input_type(${element.var}, ${init});`);
-			updater = b`@set_input_type(${element.var}, ${
-				should_cache ? this.last : value
-			});`;
+			block.chunks.hydrate.push(
+				b`@set_input_type(${element.var}, ${init});`
+			);
+			updater = b`@set_input_type(${element.var}, ${should_cache ? this.last : value});`;
 		} else if (this.is_select_value_attribute) {
 			// annoying special case
-			const is_multiple_select = element.node.get_static_attribute_value(
-				"multiple"
-			);
+			const is_multiple_select = element.node.get_static_attribute_value('multiple');
 
 			if (is_multiple_select) {
 				updater = b`@select_options(${element.var}, ${value});`;
 			} else {
 				updater = b`@select_option(${element.var}, ${value});`;
 			}
+			
+			// Set inputs value default to '' if undefined
+			if (name == 'value') {
+				block.chunks.mount.push(b`@set_input_value(${element.var}, ${value});`);
+			}
 
 			block.chunks.mount.push(b`
 				${updater}
@@ -143,25 +126,19 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 			block.chunks.hydrate.push(
 				b`if (${element.var}.src !== ${init}) ${method}(${element.var}, "${name}", ${this.last});`
 			);
-			updater = b`${method}(${element.var}, "${name}", ${
-				should_cache ? this.last : value
-			});`;
+			updater = b`${method}(${element.var}, "${name}", ${should_cache ? this.last : value});`;
 		} else if (property_name) {
-			block.chunks.hydrate.push(b`${element.var}.${property_name} = ${init};`);
+			block.chunks.hydrate.push(
+				b`${element.var}.${property_name} = ${init};`
+			);
 			updater = block.renderer.options.dev
-				? b`@prop_dev(${element.var}, "${property_name}", ${
-						should_cache ? this.last : value
-				  });`
-				: b`${element.var}.${property_name} = ${
-						should_cache ? this.last : value
-				  };`;
+				? b`@prop_dev(${element.var}, "${property_name}", ${should_cache ? this.last : value});`
+				: b`${element.var}.${property_name} = ${should_cache ? this.last : value};`;
 		} else {
 			block.chunks.hydrate.push(
 				b`${method}(${element.var}, "${name}", ${init});`
 			);
-			updater = b`${method}(${element.var}, "${name}", ${
-				should_cache ? this.last : value
-			});`;
+			updater = b`${method}(${element.var}, "${name}", ${should_cache ? this.last : value});`;
 		}
 
 		if (is_indirectly_bound_value) {
@@ -175,10 +152,7 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		}
 
 		if (dependencies.length > 0) {
-			const condition = this.get_dom_update_conditions(
-				block,
-				block.renderer.dirty(dependencies)
-			);
+			const condition = this.get_dom_update_conditions(block, block.renderer.dirty(dependencies));
 
 			block.chunks.update.push(b`
 				if (${condition}) {
@@ -187,20 +161,15 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		}
 
 		// special case – autofocus. has to be handled in a bit of a weird way
-		if (this.node.is_true && name === "autofocus") {
+		if (this.node.is_true && name === 'autofocus') {
 			block.autofocus = element.var;
 		}
 	}
 
 	get_init(block: Block, value) {
-		this.last =
-			this.should_cache &&
-			block.get_unique_name(
-				`${this.parent.var.name}_${this.name.replace(
-					/[^a-zA-Z_$]/g,
-					"_"
-				)}_value`
-			);
+		this.last = this.should_cache && block.get_unique_name(
+			`${this.parent.var.name}_${this.name.replace(/[^a-zA-Z_$]/g, '_')}_value`
+		);
 
 		if (this.should_cache) block.add_variable(this.last);
 
@@ -221,18 +190,10 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		}
 
 		if (this.is_input_value) {
-			const type = element.node.get_static_attribute_value("type");
-
-			if (
-				type === null ||
-				type === "" ||
-				type === "text" ||
-				type === "email" ||
-				type === "password"
-			) {
-				condition = x`${condition} && ${element.var}.${property_name} !== ${
-					should_cache ? last : value
-				}`;
+			const type = element.node.get_static_attribute_value('type');
+
+			if (type === null || type === "" || type === "text" || type === "email" || type === "password") {
+				condition = x`${condition} && ${element.var}.${property_name} !== ${should_cache ? last : value}`;
 			}
 		}
 
@@ -248,11 +209,9 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		const dependencies = new Set(node_dependencies);
 
 		node_dependencies.forEach((prop: string) => {
-			const indirect_dependencies = this.parent.renderer.component.indirect_dependencies.get(
-				prop
-			);
+			const indirect_dependencies = this.parent.renderer.component.indirect_dependencies.get(prop);
 			if (indirect_dependencies) {
-				indirect_dependencies.forEach((indirect_dependency) => {
+				indirect_dependencies.forEach(indirect_dependency => {
 					dependencies.add(indirect_dependency);
 				});
 			}
@@ -264,21 +223,13 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 	get_metadata() {
 		if (this.parent.node.namespace) return null;
 		const metadata = attribute_lookup[this.name];
-		if (
-			metadata &&
-			metadata.applies_to &&
-			!metadata.applies_to.includes(this.parent.node.name)
-		)
-			return null;
+		if (metadata && metadata.applies_to && !metadata.applies_to.includes(this.parent.node.name)) return null;
 		return metadata;
 	}
 
 	get_value(block) {
 		if (this.node.is_true) {
-			if (
-				this.metadata &&
-				boolean_attribute.has(this.metadata.property_name.toLowerCase())
-			) {
+			if (this.metadata && boolean_attribute.has(this.metadata.property_name.toLowerCase())) {
 				return x`true`;
 			}
 			return x`""`;
@@ -288,18 +239,17 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 		// TODO some of this code is repeated in Tag.ts — would be good to
 		// DRY it out if that's possible without introducing crazy indirection
 		if (this.node.chunks.length === 1) {
-			return this.node.chunks[0].type === "Text"
+			return this.node.chunks[0].type === 'Text'
 				? string_literal((this.node.chunks[0] as Text).data)
 				: (this.node.chunks[0] as Expression).manipulate(block);
 		}
 
-		let value =
-			this.node.name === "class"
-				? this.get_class_name_text(block)
-				: this.render_chunks(block).reduce((lhs, rhs) => x`${lhs} + ${rhs}`);
+		let value = this.node.name === 'class'
+			? this.get_class_name_text(block)
+			: this.render_chunks(block).reduce((lhs, rhs) => x`${lhs} + ${rhs}`);
 
 		// '{foo} {bar}' — treat as string concatenation
-		if (this.node.chunks[0].type !== "Text") {
+		if (this.node.chunks[0].type !== 'Text') {
 			value = x`"" + ${value}`;
 		}
 
@@ -320,7 +270,7 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 
 	render_chunks(block: Block) {
 		return this.node.chunks.map((chunk) => {
-			if (chunk.type === "Text") {
+			if (chunk.type === 'Text') {
 				return string_literal(chunk.data);
 			}
 
@@ -329,114 +279,104 @@ export default class AttributeWrapper extends BaseAttributeWrapper {
 	}
 
 	stringify() {
-		if (this.node.is_true) return "";
+		if (this.node.is_true) return '';
 
 		const value = this.node.chunks;
 		if (value.length === 0) return `=""`;
 
-		return `="${value
-			.map((chunk) => {
-				return chunk.type === "Text"
-					? chunk.data.replace(/"/g, '\\"')
-					: `\${${chunk.manipulate()}}`;
-			})
-			.join("")}"`;
+		return `="${value.map(chunk => {
+			return chunk.type === 'Text'
+				? chunk.data.replace(/"/g, '\\"')
+				: `\${${chunk.manipulate()}}`;
+		}).join('')}"`;
 	}
 }
 
 // source: https://html.spec.whatwg.org/multipage/indices.html
 const attribute_lookup = {
-	allowfullscreen: { property_name: "allowFullscreen", applies_to: ["iframe"] },
-	allowpaymentrequest: {
-		property_name: "allowPaymentRequest",
-		applies_to: ["iframe"],
-	},
-	async: { applies_to: ["script"] },
-	autofocus: {
-		applies_to: ["button", "input", "keygen", "select", "textarea"],
-	},
-	autoplay: { applies_to: ["audio", "video"] },
-	checked: { applies_to: ["input"] },
-	controls: { applies_to: ["audio", "video"] },
-	default: { applies_to: ["track"] },
-	defer: { applies_to: ["script"] },
+	allowfullscreen: { property_name: 'allowFullscreen', applies_to: ['iframe'] },
+	allowpaymentrequest: { property_name: 'allowPaymentRequest', applies_to: ['iframe'] },
+	async: { applies_to: ['script'] },
+	autofocus: { applies_to: ['button', 'input', 'keygen', 'select', 'textarea'] },
+	autoplay: { applies_to: ['audio', 'video'] },
+	checked: { applies_to: ['input'] },
+	controls: { applies_to: ['audio', 'video'] },
+	default: { applies_to: ['track'] },
+	defer: { applies_to: ['script'] },
 	disabled: {
 		applies_to: [
-			"button",
-			"fieldset",
-			"input",
-			"keygen",
-			"optgroup",
-			"option",
-			"select",
-			"textarea",
-		],
-	},
-	formnovalidate: {
-		property_name: "formNoValidate",
-		applies_to: ["button", "input"],
+			'button',
+			'fieldset',
+			'input',
+			'keygen',
+			'optgroup',
+			'option',
+			'select',
+			'textarea'
+		]
 	},
+	formnovalidate: { property_name: 'formNoValidate', applies_to: ['button', 'input'] },
 	hidden: {},
-	indeterminate: { applies_to: ["input"] },
-	ismap: { property_name: "isMap", applies_to: ["img"] },
-	loop: { applies_to: ["audio", "bgsound", "video"] },
-	multiple: { applies_to: ["input", "select"] },
-	muted: { applies_to: ["audio", "video"] },
-	nomodule: { property_name: "noModule", applies_to: ["script"] },
-	novalidate: { property_name: "noValidate", applies_to: ["form"] },
-	open: { applies_to: ["details", "dialog"] },
-	playsinline: { property_name: "playsInline", applies_to: ["video"] },
-	readonly: { property_name: "readOnly", applies_to: ["input", "textarea"] },
-	required: { applies_to: ["input", "select", "textarea"] },
-	reversed: { applies_to: ["ol"] },
-	selected: { applies_to: ["option"] },
+	indeterminate: { applies_to: ['input'] },
+	ismap: { property_name: 'isMap', applies_to: ['img'] },
+	loop: { applies_to: ['audio', 'bgsound', 'video'] },
+	multiple: { applies_to: ['input', 'select'] },
+	muted: { applies_to: ['audio', 'video'] },
+	nomodule: { property_name: 'noModule', applies_to: ['script'] },
+	novalidate: { property_name: 'noValidate', applies_to: ['form'] },
+	open: { applies_to: ['details', 'dialog'] },
+	playsinline: { property_name: 'playsInline', applies_to: ['video'] },
+	readonly: { property_name: 'readOnly', applies_to: ['input', 'textarea'] },
+	required: { applies_to: ['input', 'select', 'textarea'] },
+	reversed: { applies_to: ['ol'] },
+	selected: { applies_to: ['option'] },
 	value: {
 		applies_to: [
-			"button",
-			"option",
-			"input",
-			"li",
-			"meter",
-			"progress",
-			"param",
-			"select",
-			"textarea",
-		],
-	},
+			'button',
+			'option',
+			'input',
+			'li',
+			'meter',
+			'progress',
+			'param',
+			'select',
+			'textarea'
+		]
+	}
 };
 
-Object.keys(attribute_lookup).forEach((name) => {
+Object.keys(attribute_lookup).forEach(name => {
 	const metadata = attribute_lookup[name];
 	if (!metadata.property_name) metadata.property_name = name;
 });
 
 // source: https://html.spec.whatwg.org/multipage/indices.html
 const boolean_attribute = new Set([
-	"allowfullscreen",
-	"allowpaymentrequest",
-	"async",
-	"autofocus",
-	"autoplay",
-	"checked",
-	"controls",
-	"default",
-	"defer",
-	"disabled",
-	"formnovalidate",
-	"hidden",
-	"ismap",
-	"itemscope",
-	"loop",
-	"multiple",
-	"muted",
-	"nomodule",
-	"novalidate",
-	"open",
-	"playsinline",
-	"readonly",
-	"required",
-	"reversed",
-	"selected",
+	'allowfullscreen',
+	'allowpaymentrequest',
+	'async',
+	'autofocus',
+	'autoplay',
+	'checked',
+	'controls',
+	'default',
+	'defer',
+	'disabled',
+	'formnovalidate',
+	'hidden',
+	'ismap',
+	'itemscope',
+	'loop',
+	'multiple',
+	'muted',
+	'nomodule',
+	'novalidate',
+	'open',
+	'playsinline',
+	'readonly',
+	'required',
+	'reversed',
+	'selected'
 ]);
 
 function should_cache(attribute: AttributeWrapper) {
@@ -445,12 +385,11 @@ function should_cache(attribute: AttributeWrapper) {
 
 function is_indirectly_bound_value(attribute: AttributeWrapper) {
 	const element = attribute.parent;
-	return (
-		attribute.name === "value" &&
-		(element.node.name === "option" || // TODO check it's actually bound
-			(element.node.name === "input" &&
-				element.node.bindings.some((binding) =>
-					/checked|group/.test(binding.name)
-				)))
-	);
-}
+	return attribute.name === 'value' &&
+		(element.node.name === 'option' || // TODO check it's actually bound
+			(element.node.name === 'input' &&
+				element.node.bindings.some(
+					(binding) =>
+						/checked|group/.test(binding.name)
+				)));
+}
\ No newline at end of file