Support for <input type="radio" bind:checked/>

fixed #1104

src/validate/html/validateElement.ts

@@ -111,12 +111,15 @@ export default function validateElement(
 					);
 				}
 
-				if (checkTypeAttribute(validator, node) !== 'checkbox') {
+				const type = checkTypeAttribute(validator, node);
+
+				if (type !== 'checkbox' && type !== 'radio') {
 					validator.error(
-						`'${name}' binding can only be used with <input type="checkbox">`,
+						`'checked' binding can only be used with <input type="checkbox"> or <input type="radio">`,
 						attribute.start
 					);
 				}
+
 			} else if (name === 'group') {
 				if (node.name !== 'input') {
 					validator.error(
@@ -129,7 +132,7 @@ export default function validateElement(
 
 				if (type !== 'checkbox' && type !== 'radio') {
 					validator.error(
-						`'checked' binding can only be used with <input type="checkbox"> or <input type="radio">`,
+						`'group' binding can only be used with <input type="checkbox"> or <input type="radio">`,
 						attribute.start
 					);
 				}

test/validator/samples/binding-input-checked/errors.json

@@ -1,5 +1,5 @@
 [{
-	"message": "'checked' binding can only be used with <input type=\"checkbox\">",
+	"message": "'checked' binding can only be used with <input type=\"checkbox\"> or <input type=\"radio\">",
 	"loc": {
 		"line": 1,
 		"column": 7

test/validator/samples/binding-input-radio-group/errors.json

@@ -0,0 +1,8 @@
+[{
+	"message": "'group' binding can only be used with <input type=\"checkbox\"> or <input type=\"radio\">",
+	"loc": {
+		"line": 1,
+		"column": 7
+	},
+	"pos": 7
+}]

test/validator/samples/binding-input-radio-group/input.html

@@ -0,0 +1 @@
+<input bind:group='bar'>