update messages

Author: Rich-Harris

documentation/docs/98-reference/.generated/compile-errors.md

@@ -87,7 +87,7 @@ Attribute values containing `{...}` must be enclosed in quote marks, unless the
 ### bind_invalid_expression
 
 ```
-Can only bind to an Identifier or MemberExpression
+Can only bind to an Identifier or MemberExpression or a `{get, set}` pair
 ```
 
 ### bind_invalid_name
@@ -100,6 +100,12 @@ Can only bind to an Identifier or MemberExpression
 `bind:%name%` is not a valid binding. %explanation%
 ```
 
+### bind_invalid_parens
+
+```
+`bind:%name%={get, set}` must not have surrounding parentheses
+```
+
 ### bind_invalid_target
 
 ```
@@ -436,12 +442,6 @@ Imports of `svelte/internal/*` are forbidden. It contains private runtime code w
 The arguments keyword cannot be used within the template or at the top level of a component
 ```
 
-### invalid_bind_directive
-
-```
-Bind directive getter/setter values (`bind:thing={ getter, setter }`) must be two JavaScript expressions separated by a single comma and enclosed in curly braces
-```
-
 ### js_parse_error
 
 ```

packages/svelte/messages/compile-errors/template.md

@@ -56,14 +56,18 @@
 
 ## bind_invalid_expression
 
-> Can only bind to an Identifier or MemberExpression
+> Can only bind to an Identifier or MemberExpression or a `{get, set}` pair
 
 ## bind_invalid_name
 
 > `bind:%name%` is not a valid binding
 
 > `bind:%name%` is not a valid binding. %explanation%
 
+## bind_invalid_parens
+
+> `bind:%name%={get, set}` must not have surrounding parentheses
+
 ## bind_invalid_target
 
 > `bind:%name%` can only be used with %elements%
@@ -180,10 +184,6 @@
 
 > `<%name%>` does not support non-event attributes or spread attributes
 
-## invalid_bind_directive
-
-> Bind directive getter/setter values (`bind:thing={ getter, setter }`) must be two JavaScript expressions separated by a single comma and enclosed in curly braces
-
 ## js_parse_error
 
 > %message%

packages/svelte/src/compiler/errors.js

@@ -706,12 +706,12 @@ export function bind_group_invalid_expression(node) {
 }
 
 /**
- * Can only bind to an Identifier or MemberExpression
+ * Can only bind to an Identifier or MemberExpression or a `{get, set}` pair
  * @param {null | number | NodeLike} node
  * @returns {never}
  */
 export function bind_invalid_expression(node) {
-	e(node, "bind_invalid_expression", "Can only bind to an Identifier or MemberExpression");
+	e(node, "bind_invalid_expression", "Can only bind to an Identifier or MemberExpression or a `{get, set}` pair");
 }
 
 /**
@@ -725,6 +725,16 @@ export function bind_invalid_name(node, name, explanation) {
 	e(node, "bind_invalid_name", explanation ? `\`bind:${name}\` is not a valid binding. ${explanation}` : `\`bind:${name}\` is not a valid binding`);
 }
 
+/**
+ * `bind:%name%={get, set}` must not have surrounding parentheses
+ * @param {null | number | NodeLike} node
+ * @param {string} name
+ * @returns {never}
+ */
+export function bind_invalid_parens(node, name) {
+	e(node, "bind_invalid_parens", `\`bind:${name}={get, set}\` must not have surrounding parentheses`);
+}
+
 /**
  * `bind:%name%` can only be used with %elements%
  * @param {null | number | NodeLike} node
@@ -1003,15 +1013,6 @@ export function illegal_element_attribute(node, name) {
 	e(node, "illegal_element_attribute", `\`<${name}>\` does not support non-event attributes or spread attributes`);
 }
 
-/**
- * Bind directive getter/setter values (`bind:thing={ getter, setter }`) must be two JavaScript expressions separated by a single comma and enclosed in curly braces
- * @param {null | number | NodeLike} node
- * @returns {never}
- */
-export function invalid_bind_directive(node) {
-	e(node, "invalid_bind_directive", "Bind directive getter/setter values (`bind:thing={ getter, setter }`) must be two JavaScript expressions separated by a single comma and enclosed in curly braces");
-}
-
 /**
  * %message%
  * @param {null | number | NodeLike} node

packages/svelte/src/compiler/phases/2-analyze/visitors/BindDirective.js

@@ -133,12 +133,12 @@ export function BindDirective(node, context) {
 		let i = /** @type {number} */ (node.expression.start);
 		while (context.state.analysis.source[--i] !== '{') {
 			if (context.state.analysis.source[i] === '(') {
-				e.invalid_bind_directive(node);
+				e.bind_invalid_parens(node, node.name);
 			}
 		}
 
 		if (node.expression.expressions.length !== 2) {
-			e.invalid_bind_directive(node);
+			e.bind_invalid_expression(node);
 		}
 
 		return;