From 3f312231863237b8240c23775563e95ec4a7ea7d Mon Sep 17 00:00:00 2001
From: Emil Tholin <emtholin@gmail.com>
Date: Wed, 15 May 2019 17:26:57 +0200
Subject: [PATCH] Add error for missing equals after attribute name

---
 src/parse/state/tag.ts                            |  7 ++++++-
 .../samples/attribute-expected-equals/errors.json | 15 +++++++++++++++
 .../attribute-expected-equals/input.svelte        |  5 +++++
 3 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 test/validator/samples/attribute-expected-equals/errors.json
 create mode 100644 test/validator/samples/attribute-expected-equals/input.svelte

diff --git a/src/parse/state/tag.ts b/src/parse/state/tag.ts
index 365085ca08..56195549d8 100644
--- a/src/parse/state/tag.ts
+++ b/src/parse/state/tag.ts
@@ -358,7 +358,7 @@ function read_attribute(parser: Parser, unique_names: Set<string>) {
 		}
 	}
 
-	let name = parser.read_until(/(\s|=|\/|>)/);
+	let name = parser.read_until(/[\s=\/>"']/);
 	if (!name) return null;
 
 	let end = parser.index;
@@ -383,6 +383,11 @@ function read_attribute(parser: Parser, unique_names: Set<string>) {
 	if (parser.eat('=')) {
 		value = read_attribute_value(parser);
 		end = parser.index;
+	} else if (parser.match_regex(/["']/)) {
+		parser.error({
+			code: `unexpected-token`,
+			message: `Expected =`
+		}, parser.index);
 	}
 
 	if (type) {
diff --git a/test/validator/samples/attribute-expected-equals/errors.json b/test/validator/samples/attribute-expected-equals/errors.json
new file mode 100644
index 0000000000..a3fa9d3cac
--- /dev/null
+++ b/test/validator/samples/attribute-expected-equals/errors.json
@@ -0,0 +1,15 @@
+[{
+	"code": "unexpected-token",
+	"message": "Expected =",
+	"start": {
+		"line": 5,
+		"column": 9,
+		"character": 50
+	},
+	"end": {
+		"line": 5,
+		"column": 9,
+		"character": 50
+	},
+	"pos": 50
+}]
diff --git a/test/validator/samples/attribute-expected-equals/input.svelte b/test/validator/samples/attribute-expected-equals/input.svelte
new file mode 100644
index 0000000000..91f4b0ca7b
--- /dev/null
+++ b/test/validator/samples/attribute-expected-equals/input.svelte
@@ -0,0 +1,5 @@
+<script>
+	let name = 'world';
+</script>
+
+<h1 class"=foo">Hello {name}!</h1>