fix: non-experimental allow_unresolved_symlinks

Fix aspect-build#1102

js/private/BUILD.bazel

@@ -24,9 +24,9 @@ config_setting(
     visibility = ["//visibility:public"],
 )
 
-config_setting(
+alias(
     name = "experimental_allow_unresolved_symlinks",
-    values = {"experimental_allow_unresolved_symlinks": "true"},
+    actual = "@aspect_config_settings//:allow_unresolved_symlinks",
     visibility = ["//visibility:public"],
 )
 

js/private/repository_utils.bzl

@@ -0,0 +1,24 @@
+"""
+Repository rule utilities.
+"""
+
+load("@bazel_skylib//lib:versions.bzl", "versions")
+
+def _config_settings_impl(rctx):
+    prop = "experimental_allow_unresolved_symlinks"
+    if versions.get() == "" or versions.is_at_least("6.3", versions.get()):
+        prop = "allow_unresolved_symlinks"
+
+    rctx.file("BUILD.bazel", """# @generated by @aspect_rules_js//js/private:repository_utils.bzl
+
+config_setting(
+    name = "allow_unresolved_symlinks",
+    values = {values},
+    visibility = ["//visibility:public"],
+)
+""".format(values = dict([(prop, "true")])))
+
+config_settings = repository_rule(
+    implementation = _config_settings_impl,
+    attrs = {},
+)

js/repositories.bzl

@@ -5,6 +5,7 @@ See https://docs.bazel.build/versions/main/skylark/deploying.html#dependencies
 """
 
 load("//js/private:maybe.bzl", http_archive = "maybe_http_archive")
+load("//js/private:repository_utils.bzl", _config_settings = "config_settings")
 
 def rules_js_dependencies():
     http_archive(
@@ -25,3 +26,7 @@ def rules_js_dependencies():
         strip_prefix = "bazel-lib-1.32.1",
         url = "https://github.com/aspect-build/bazel-lib/releases/download/v1.32.1/bazel-lib-v1.32.1.tar.gz",
     )
+
+    _config_settings(
+        name = "aspect_config_settings",
+    )