Merge pull request sveltejs#1683 from sveltejs/sveltejsgh-1658

don't warn on empty block for nbsp

Author: Rich-Harris

src/validate/html/index.ts

@@ -14,7 +14,7 @@ function isEmptyBlock(node: Node) {
 	if (!/Block$/.test(node.type) || !node.children) return false;
 	if (node.children.length > 1) return false;
 	const child = node.children[0];
-	return !child || (child.type === 'Text' && !/\S/.test(child.data));
+	return !child || (child.type === 'Text' && !/[^ \r\n\f\v\t]/.test(child.data));
 }
 
 export default function validateHtml(validator: Validator, html: Node) {

test/validator/samples/non-empty-block-dev/_config.js

@@ -0,0 +1,3 @@
+export default {
+	dev: true
+};

test/validator/samples/non-empty-block-dev/input.html

@@ -0,0 +1,3 @@
+{#if x}
+	 
+{/if}

test/validator/samples/non-empty-block-dev/warnings.json

@@ -0,0 +1 @@
+[]