relax a little

src/compiler/compile/nodes/Element.ts

@@ -853,8 +853,8 @@ export default class Element extends Node {
 			const autocomplete = attribute_map.get('autocomplete');
 
 			if (type && autocomplete) {
-				const type_value: null | true | string = type.get_static_value();
-				const autocomplete_value: null | true | string = autocomplete.get_static_value();
+				const type_value = type.get_static_value();
+				const autocomplete_value = autocomplete.get_static_value();
 
 				if (!is_valid_autocomplete(type_value, autocomplete_value)) {
 					component.warn(autocomplete, compiler_warnings.a11y_autocomplete_valid(type_value, autocomplete_value));

src/compiler/compile/utils/a11y.ts

@@ -228,6 +228,9 @@ export function is_semantic_role_element(role: ARIARoleDefinitionKey, tag_name:
 // https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofilling-form-controls:-the-autocomplete-attribute
 const address_type_tokens = new Set(['shipping', 'billing']);
 const autofill_field_name_tokens = new Set([
+	'',
+	'on',
+	'off',
 	'name',
 	'honorific-prefix',
 	'given-name',
@@ -293,16 +296,6 @@ export function is_valid_autocomplete(type: null | true | string, autocomplete:
 	}
 
 	const tokens = autocomplete.trim().toLowerCase().split(regex_whitespaces);
-	const normalized_type = type.toLowerCase();
-
-	const input_wears_autofill_anchor_mantle = normalized_type === 'hidden';
-	const input_wears_autofill_expectation_mantle = !input_wears_autofill_anchor_mantle;
-
-	if (input_wears_autofill_expectation_mantle) {
-		if (tokens[0] === 'on' || tokens[0] === 'off') {
-			return tokens.length === 1;
-		}
-	}
 
 	if (typeof tokens[0] === 'string' && tokens[0].startsWith('section-')) {
 		tokens.shift();

test/validator/samples/a11y-autocomplete-valid/input.svelte

@@ -11,11 +11,11 @@
 <input type="TEXT" autocomplete="ON" />
 <input type="email" autocomplete="url" />
 <input type="text" autocomplete="section-blue shipping street-address" />
-
-<!-- INVALID -->
-<input type="text" autocomplete />
 <input type="hidden" autocomplete="off" />
 <input type="hidden" autocomplete="on" />
 <input type="text" autocomplete="" />
+
+<!-- INVALID -->
+<input type="text" autocomplete />
 <input type="text" autocomplete="incorrect" />
 <input type="text" autocomplete="webauthn" />

test/validator/samples/a11y-autocomplete-valid/warnings.json

@@ -3,45 +3,9 @@
 		"code": "a11y-autocomplete-valid",
 		"end": {
 			"column": 31,
-			"line": 16
-		},
-		"message": "A11y: The value 'true' is not supported by the attribute 'autocomplete' on element <input type=\"text\">",
-		"start": {
-			"column": 19,
-			"line": 16
-		}
-	},
-	{
-		"code": "a11y-autocomplete-valid",
-		"end": {
-			"column": 39,
-			"line": 17
-		},
-		"message": "A11y: The value 'off' is not supported by the attribute 'autocomplete' on element <input type=\"hidden\">",
-		"start": {
-			"column": 21,
-			"line": 17
-		}
-	},
-	{
-		"code": "a11y-autocomplete-valid",
-		"message": "A11y: The value 'on' is not supported by the attribute 'autocomplete' on element <input type=\"hidden\">",
-		"end": {
-			"column": 38,
-			"line": 18
-		},
-		"start": {
-			"column": 21,
-			"line": 18
-		}
-	},
-	{
-		"code": "a11y-autocomplete-valid",
-		"message": "A11y: The value '' is not supported by the attribute 'autocomplete' on element <input type=\"text\">",
-		"end": {
-			"column": 34,
 			"line": 19
 		},
+		"message": "A11y: The value 'true' is not supported by the attribute 'autocomplete' on element <input type=\"text\">",
 		"start": {
 			"column": 19,
 			"line": 19