cheeky hack to keep treeshakeability until we can nuke this validation altogether

packages/svelte/src/internal/shared/errors.js

@@ -2,6 +2,22 @@
 
 import { DEV } from 'esm-env';
 
+/**
+ * Cannot use `{@render children(...)}` if the parent component uses `let:` directives. Consider using a named snippet instead
+ * @returns {never}
+ */
+export function invalid_default_snippet() {
+	if (DEV) {
+		const error = new Error(`invalid_default_snippet\nCannot use \`{@render children(...)}\` if the parent component uses \`let:\` directives. Consider using a named snippet instead`);
+
+		error.name = 'Svelte error';
+		throw error;
+	} else {
+		// TODO print a link to the documentation
+		throw new Error("invalid_default_snippet");
+	}
+}
+
 /**
  * `%name%(...)` can only be used during component initialisation
  * @param {string} name
@@ -82,20 +98,4 @@ export function svelte_element_invalid_this_value() {
 		// TODO print a link to the documentation
 		throw new Error("svelte_element_invalid_this_value");
 	}
-}
-
-/**
- * Cannot use `{@render children(...)}` if the parent component uses `let:` directives. Consider using a named snippet instead
- * @returns {never}
- */
-export function invalid_default_snippet() {
-	if (DEV) {
-		const error = new Error(`invalid_default_snippet\nCannot use \`{@render children(...)}\` if the parent component uses \`let:\` directives. Consider using a named snippet instead`);
-
-		error.name = 'Svelte error';
-		throw error;
-	} else {
-		// TODO print a link to the documentation
-		throw new Error("invalid_default_snippet");
-	}
 }

packages/svelte/src/internal/shared/validate.js

@@ -12,6 +12,7 @@ export const invalid_default_snippet = add_snippet_symbol(e.invalid_default_snip
  * @param {any} fn
  * @returns {import('svelte').Snippet}
  */
+/*@__NO_SIDE_EFFECTS__*/
 export function add_snippet_symbol(fn) {
 	fn[snippet_symbol] = true;
 	return fn;