feat: add experimental js_binary(patch_node_esm_loader)

Author: devversion

.gitattributes

@@ -6,5 +6,5 @@ js/private/coverage/coverage.js linguist-generated=true
 js/private/devserver/js_run_devserver.mjs linguist-generated=true
 js/private/watch/aspect_watch_protocol.mjs linguist-generated=true
 js/private/watch/aspect_watch_protocol.d.mts linguist-generated=true
-js/private/node-patches/fs.cjs linguist-generated=true
+js/private/node-patches/fs*.cjs linguist-generated=true
 js/private/js_image_layer.mjs linguist-generated=true

.prettierignore

@@ -6,6 +6,7 @@ examples/**/*-docs.md
 js/private/coverage/coverage.js
 js/private/devserver/js_run_devserver.mjs
 js/private/node-patches/fs.cjs
+js/private/node-patches/fs_stat.cjs
 js/private/watch/aspect_watch_protocol.mjs
 js/private/watch/aspect_watch_protocol.d.mts
 min/

MODULE.bazel

@@ -14,7 +14,7 @@ bazel_dep(name = "bazel_features", version = "1.9.0")
 bazel_dep(name = "bazel_lib", version = "3.0.0")
 bazel_dep(name = "bazel_skylib", version = "1.5.0")
 bazel_dep(name = "platforms", version = "0.0.5")
-bazel_dep(name = "rules_nodejs", version = "6.3.0")
+bazel_dep(name = "rules_nodejs", version = "6.4.0")
 bazel_dep(name = "yq.bzl", version = "0.3.2")
 
 tel = use_extension("@aspect_tools_telemetry//:extension.bzl", "telemetry")

js/private/js_binary.bzl

@@ -205,6 +205,13 @@ _ATTRS = {
         which can lead to non-hermetic behavior.""",
         default = True,
     ),
+    "patch_node_esm_loader": attr.bool(
+        doc = """Apply the internal lstat patch to prevent the program from following symlinks out of
+        the execroot, runfiles and the sandbox even when using the ESM loader.
+
+        This flag only has an effect when `patch_node_fs` is True.""",
+        default = False,
+    ),
     "include_sources": attr.bool(
         doc = """When True, `sources` from `JsInfo` providers in `data` targets are included in the runfiles of the target.""",
         default = True,
@@ -320,7 +327,10 @@ _ATTRS = {
     "_windows_constraint": attr.label(default = "@platforms//os:windows"),
     "_node_patches_files": attr.label_list(
         allow_files = True,
-        default = [Label("@aspect_rules_js//js/private/node-patches:fs.cjs")],
+        default = [
+            Label("@aspect_rules_js//js/private/node-patches:fs.cjs"),
+            Label("@aspect_rules_js//js/private/node-patches:fs_stat.cjs"),
+        ],
     ),
     "_node_patches": attr.label(
         allow_single_file = True,
@@ -566,11 +576,18 @@ def _create_launcher(ctx, log_prefix_rule_set, log_prefix_rule, fixed_args = [],
     )
 
 def _js_binary_impl(ctx):
+    # Only apply lstat patch if it's requested
+    JS_BINARY__PATCH_NODE_ESM_LOADER = "1" if ctx.attr.patch_node_esm_loader else "0"
+    fixed_env = {
+        "JS_BINARY__PATCH_NODE_ESM_LOADER": JS_BINARY__PATCH_NODE_ESM_LOADER,
+    }
+
     launcher = _create_launcher(
         ctx,
         log_prefix_rule_set = "aspect_rules_js",
         log_prefix_rule = "js_test" if ctx.attr.testonly else "js_binary",
         fixed_args = ctx.attr.fixed_args,
+        fixed_env = fixed_env,
     )
     runfiles = launcher.runfiles
 

js/private/node-patches/BUILD.bazel

@@ -4,10 +4,12 @@ write_source_files(
     name = "checked_in_compile",
     files = {
         "fs.cjs": "//js/private/node-patches/src:fs-generated.cjs",
+        "fs_stat.cjs": "//js/private/node-patches/src:fs_stat.cjs",
     },
 )
 
 exports_files([
     "fs.cjs",
+    "fs_stat.cjs",
     "register.cjs",
 ])