From 29d4695fc769e995e98bc538d4325e5679ec0298 Mon Sep 17 00:00:00 2001
From: Rich Harris <richard.a.harris@gmail.com>
Date: Fri, 20 Nov 2020 08:43:05 -0500
Subject: [PATCH] boolean argument

---
 .../compile/render_ssr/handlers/shared/get_attribute_value.ts | 4 ++--
 src/runtime/internal/ssr.ts                                   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/compiler/compile/render_ssr/handlers/shared/get_attribute_value.ts b/src/compiler/compile/render_ssr/handlers/shared/get_attribute_value.ts
index 9efb086854..d62b2d14e9 100644
--- a/src/compiler/compile/render_ssr/handlers/shared/get_attribute_value.ts
+++ b/src/compiler/compile/render_ssr/handlers/shared/get_attribute_value.ts
@@ -9,7 +9,7 @@ export function get_class_attribute_value(attribute: Attribute): ESTreeExpressio
 	// handle special case — `class={possiblyUndefined}` with scoped CSS
 	if (attribute.chunks.length === 2 && (attribute.chunks[1] as Text).synthetic) {
 		const value = (attribute.chunks[0] as Expression).node;
-		return x`@escape(@null_to_empty(${value}), 1) + "${(attribute.chunks[1] as Text).data}"`;
+		return x`@escape(@null_to_empty(${value}), true) + "${(attribute.chunks[1] as Text).data}"`;
 	}
 
 	return get_attribute_value(attribute);
@@ -22,7 +22,7 @@ export function get_attribute_value(attribute: Attribute): ESTreeExpression {
 		.map((chunk) => {
 			return chunk.type === 'Text'
 				? string_literal(chunk.data.replace(/"/g, '&quot;')) as ESTreeExpression
-				: x`@escape(${chunk.node}, 1)`;
+				: x`@escape(${chunk.node}, true)`;
 		})
 		.reduce((lhs, rhs) => x`${lhs} + ${rhs}`);
 }
diff --git a/src/runtime/internal/ssr.ts b/src/runtime/internal/ssr.ts
index 92e6a923b8..5d321abee4 100644
--- a/src/runtime/internal/ssr.ts
+++ b/src/runtime/internal/ssr.ts
@@ -41,10 +41,10 @@ const escapes = {
 	'<': '&lt'
 };
 
-export function escape(html: string, attr: 0 | 1 = 0) {
+export function escape(html: string, is_attr = false) {
 	if (typeof html !== 'string') return html;
 
-	const pattern = attr ? ATTR_REGEX : CONTENT_REGEX;
+	const pattern = is_attr ? ATTR_REGEX : CONTENT_REGEX;
 	pattern.lastIndex = 0;
 
 	let escaped = '';