refactor into smaller compiler output

src/compiler/compile/render_dom/wrappers/MustacheTag.ts

@@ -25,19 +25,19 @@ export default class MustacheTagWrapper extends Tag {
 			this.parent instanceof ElementWrapper &&
 			this.parent.attributes.filter((a) => a.node.is_spread);
 
-		let is_contenteditable: Expression | undefined = undefined;
+		let contenteditable_attr_value: Expression | undefined = undefined;
 		if (contenteditable_attributes.length > 0) {
 			const value = (contenteditable_attributes[0] as AttributeWrapper).get_value(block);
-			is_contenteditable = x`~@contenteditable_truthy_values.indexOf(${value})`;
+			contenteditable_attr_value = x`${value}`;
 		}	else if (spread_attributes.length > 0 && data.element_data_name) {
-			is_contenteditable = x`~@contenteditable_truthy_values.indexOf(${data.element_data_name}['contenteditable'])`;
+			contenteditable_attr_value = x`${data.element_data_name}['contenteditable']`;
 		}
 
 		const { init } = this.rename_this_method(
 			block,
 			value => {
-				if (is_contenteditable) {
-					return x`${is_contenteditable} ? @set_data_contenteditable(${this.var}, ${value}) : @set_data(${this.var}, ${value})`
+				if (contenteditable_attr_value) {
+					return x`@set_data_maybe_contenteditable(${this.var}, ${value}, ${contenteditable_attr_value})`
 				} else {
 					return x`@set_data(${this.var}, ${value})`;
 				}

src/runtime/internal/dev.ts

@@ -1,6 +1,7 @@
 import { custom_event, append, append_hydration, insert, insert_hydration, detach, listen, attr } from './dom';
 import { SvelteComponent } from './Component';
 import { is_void } from '../../shared/utils/names';
+import { contenteditable_truthy_values } from './utils';
 
 export function dispatch_dev<T=any>(type: string, detail?: T) {
 	document.dispatchEvent(custom_event(type, { version: '__VERSION__', ...detail }, { bubbles: true }));
@@ -90,11 +91,15 @@ export function set_data_dev(text: Text, data: unknown) {
 	text.data = (data as string);
 }
 
-export function set_data_contenteditable_dev(text: Text, data: unknown) {
-	data = '' + data;
-	if (text.wholeText === data) return;
-	dispatch_dev('SvelteDOMSetData', { node: text, data });
-	text.data = (data as string);
+export function set_data_maybe_contenteditable_dev(text: Text, data: unknown, attr_value: string) {
+	if (~contenteditable_truthy_values.indexOf(attr_value)) {
+		data = '' + data;
+		if (text.wholeText === data) return;
+		dispatch_dev('SvelteDOMSetData', { node: text, data });
+		text.data = (data as string);
+	} else {
+		set_data_dev(text, data);
+	}
 }
 
 export function validate_each_argument(arg) {

src/runtime/internal/dom.ts

@@ -1,4 +1,4 @@
-import { has_prop } from './utils';
+import { contenteditable_truthy_values, has_prop } from './utils';
 
 // Track which nodes are claimed during hydration. Unclaimed nodes can then be removed from the DOM
 // at the end of hydration without touching the remaining nodes.
@@ -587,10 +587,14 @@ export function set_data(text: Text, data: unknown) {
 	text.data = (data as string);
 }
 
-export function set_data_contenteditable(text: Text, data: unknown) {
-	data = '' + data;
-	if (text.wholeText === data) return;
-	text.data = (data as string);
+export function set_data_maybe_contenteditable(text: Text, data: unknown, attr_value: string) {
+	if (~contenteditable_truthy_values.indexOf(attr_value)) {
+		data = '' + data;
+		if (text.wholeText === data) return;
+		text.data = (data as string);
+	} else {
+		set_data(text, data);
+	}
 }
 
 export function set_input_value(input, value) {