From 3dc0320e438f90decc8f83a104f0002d43be7050 Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Mon, 16 Aug 2021 09:58:58 +0900
Subject: [PATCH] src: add --no-global-search-paths cli option

---
 doc/api/cli.md      | 9 +++++++++
 doc/node.1          | 3 +++
 src/env.cc          | 4 ++++
 src/node_options.cc | 5 +++++
 src/node_options.h  | 1 +
 5 files changed, 22 insertions(+)

diff --git a/doc/api/cli.md b/doc/api/cli.md
index 2314886f79ad9a..e1ff206c54ea1b 100644
--- a/doc/api/cli.md
+++ b/doc/api/cli.md
@@ -612,6 +612,14 @@ added: v9.0.0
 Disables runtime checks for `async_hooks`. These will still be enabled
 dynamically when `async_hooks` is enabled.
 
+### `--no-global-search-paths`
+<!-- YAML
+added: REPLACEME
+-->
+
+Do not search modules from global paths like `$HOME/.node_modules` and
+`$NODE_PATH`.
+
 ### `--no-warnings`
 <!-- YAML
 added: v6.0.0
@@ -1423,6 +1431,7 @@ Node.js options that are allowed are:
 * `--no-deprecation`
 * `--no-experimental-repl-await`
 * `--no-force-async-hooks-checks`
+* `--no-global-search-paths`
 * `--no-warnings`
 * `--node-memory-debug`
 * `--openssl-config`
diff --git a/doc/node.1 b/doc/node.1
index 29861a7fab4c86..9bc1b72320b4ad 100644
--- a/doc/node.1
+++ b/doc/node.1
@@ -277,6 +277,9 @@ Silence deprecation warnings.
 Disable runtime checks for `async_hooks`.
 These will still be enabled dynamically when `async_hooks` is enabled.
 .
+.It Fl -no-global-search-paths
+Do not search modules from global paths.
+.
 .It Fl -no-warnings
 Silence all process warnings (including deprecations).
 .
diff --git a/src/env.cc b/src/env.cc
index 1cc7da1ce15f43..b652f15cb9988c 100644
--- a/src/env.cc
+++ b/src/env.cc
@@ -383,6 +383,10 @@ Environment::Environment(IsolateData* isolate_data,
   inspector_host_port_ = std::make_shared<ExclusiveAccess<HostPort>>(
       options_->debug_options().host_port);
 
+  if (!options_->global_search_paths) {
+    flags_ |= EnvironmentFlags::kNoGlobalSearchPaths;
+  }
+
   if (!(flags_ & EnvironmentFlags::kOwnsProcessState)) {
     set_abort_on_uncaught_exception(false);
   }
diff --git a/src/node_options.cc b/src/node_options.cc
index 30373fe033595e..81ff7e703d7a77 100644
--- a/src/node_options.cc
+++ b/src/node_options.cc
@@ -402,6 +402,11 @@ EnvironmentOptionsParser::EnvironmentOptionsParser() {
             &EnvironmentOptions::force_async_hooks_checks,
             kAllowedInEnvironment,
             true);
+  AddOption("--global-search-paths",
+            "disable global module search paths",
+            &EnvironmentOptions::global_search_paths,
+            kAllowedInEnvironment,
+            true);
   AddOption("--warnings",
             "silence all process warnings",
             &EnvironmentOptions::warnings,
diff --git a/src/node_options.h b/src/node_options.h
index a751d787d7f189..563bf0a8b5a860 100644
--- a/src/node_options.h
+++ b/src/node_options.h
@@ -121,6 +121,7 @@ class EnvironmentOptions : public Options {
   uint64_t max_http_header_size = 16 * 1024;
   bool deprecation = true;
   bool force_async_hooks_checks = true;
+  bool global_search_paths = true;
   bool warnings = true;
   bool force_context_aware = false;
   bool pending_deprecation = false;