From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samuel Attard <sattard@slack-corp.com>
Date: Wed, 22 May 2019 13:34:18 -0700
Subject: chore: allow the node entrypoint to be a builtin_module

This allows embedders to tell Node.js what the first "real" file is  when
they use themselves as the entry point. We should try to upstream some form
of this.

diff --git a/lib/internal/modules/cjs/loader.js b/lib/internal/modules/cjs/loader.js
index 364469160af5e348f8890417de16a63c0d1dca67..75d5f58fe02fa8cfa7716ffaf761d567ab403a2c 100644
--- a/lib/internal/modules/cjs/loader.js
+++ b/lib/internal/modules/cjs/loader.js
@@ -1441,6 +1441,13 @@ Module.prototype._compile = function(content, filename, loadAsESM = false) {
   if (getOptionValue('--inspect-brk') && process._eval == null) {
     if (!resolvedArgv) {
       // We enter the repl if we're not given a filename argument.
+      // process._firstFileName is used by Embedders to tell node what
+      // the first "real" file is when they use themselves as the entry
+      // point
+      if (process._firstFileName) {
+        resolvedArgv = process._firstFileName
+        delete process._firstFileName
+      } else
       if (process.argv[1]) {
         try {
           resolvedArgv = Module._resolveFilename(process.argv[1], null, false);
diff --git a/lib/internal/process/pre_execution.js b/lib/internal/process/pre_execution.js
index ea7afd52fab1cf3fde1674be1429a00562b714c0..02cfc8b3328fedb6306abf6c738bea772c674458 100644
--- a/lib/internal/process/pre_execution.js
+++ b/lib/internal/process/pre_execution.js
@@ -247,12 +247,14 @@ function patchProcessObject(expandArgv1) {
   if (expandArgv1 && process.argv[1] &&
       !StringPrototypeStartsWith(process.argv[1], '-')) {
     // Expand process.argv[1] into a full path.
-    const path = require('path');
-    try {
-      mainEntry = path.resolve(process.argv[1]);
-      process.argv[1] = mainEntry;
-    } catch {
-      // Continue regardless of error.
+    if (!process.argv[1] || !process.argv[1].startsWith('electron/js2c')) {
+      const path = require('path');
+      try {
+        mainEntry = path.resolve(process.argv[1]);
+        process.argv[1] = mainEntry;
+      } catch {
+        // Continue regardless of error.
+      }
     }
   }
 
