fix(ext/node): init arch, pid, platform at startup

ext/node/polyfills/process.ts

@@ -48,13 +48,10 @@ import { Command } from "ext:runtime/40_process.js";
 let argv0Getter = () => "";
 export let argv0 = "deno";
 
-// TODO(kt3k): This should be set at start up time
 export let arch = "";
 
-// TODO(kt3k): This should be set at start up time
 export let platform = "";
 
-// TODO(kt3k): This should be set at start up time
 export let pid = 0;
 
 let stdin, stdout, stderr;
@@ -368,9 +365,6 @@ class Process extends EventEmitter {
 
   /** https://nodejs.org/api/process.html#process_process_arch */
   get arch() {
-    if (!arch) {
-      arch = arch_();
-    }
     return arch;
   }
 
@@ -561,9 +555,6 @@ class Process extends EventEmitter {
 
   /** https://nodejs.org/api/process.html#process_process_pid */
   get pid() {
-    if (!pid) {
-      pid = Deno.pid;
-    }
     return pid;
   }
 
@@ -574,9 +565,6 @@ class Process extends EventEmitter {
 
   /** https://nodejs.org/api/process.html#process_process_platform */
   get platform() {
-    if (!platform) {
-      platform = isWindows ? "win32" : Deno.build.os;
-    }
     return platform;
   }
 
@@ -939,6 +927,10 @@ internals.__bootstrapNodeProcess = function (
 
   process.setStartTime(Date.now());
 
+  arch = arch_();
+  platform = isWindows ? "win32" : Deno.build.os;
+  pid = Deno.pid;
+
   // @ts-ignore Remove setStartTime and #startTime is not modifiable
   delete process.setStartTime;
   delete internals.__bootstrapNodeProcess;

tests/unit_node/process_test.ts

@@ -1,7 +1,14 @@
 // deno-lint-ignore-file no-undef
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-import process, { argv, env } from "node:process";
+import process, {
+  arch as importedArch,
+  argv,
+  env,
+  pid as importedPid,
+  platform as importedPlatform,
+} from "node:process";
+
 import { Readable } from "node:stream";
 import { once } from "node:events";
 import {
@@ -83,7 +90,11 @@ Deno.test({
 Deno.test({
   name: "process.platform",
   fn() {
+    const expectedOs = Deno.build.os == "windows" ? "win32" : Deno.build.os;
     assertEquals(typeof process.platform, "string");
+    assertEquals(process.platform, expectedOs);
+    assertEquals(typeof importedPlatform, "string");
+    assertEquals(importedPlatform, expectedOs);
   },
 });
 
@@ -102,14 +113,20 @@ Deno.test({
 Deno.test({
   name: "process.arch",
   fn() {
-    assertEquals(typeof process.arch, "string");
-    if (Deno.build.arch == "x86_64") {
-      assertEquals(process.arch, "x64");
-    } else if (Deno.build.arch == "aarch64") {
-      assertEquals(process.arch, "arm64");
-    } else {
-      throw new Error("unreachable");
+    function testValue(arch: string) {
+      if (Deno.build.arch == "x86_64") {
+        assertEquals(arch, "x64");
+      } else if (Deno.build.arch == "aarch64") {
+        assertEquals(arch, "arm64");
+      } else {
+        throw new Error("unreachable");
+      }
     }
+
+    assertEquals(typeof process.arch, "string");
+    testValue(process.arch);
+    assertEquals(typeof importedArch, "string");
+    testValue(importedArch);
   },
 });
 
@@ -118,6 +135,8 @@ Deno.test({
   fn() {
     assertEquals(typeof process.pid, "number");
     assertEquals(process.pid, Deno.pid);
+    assertEquals(typeof importedPid, "number");
+    assertEquals(importedPid, Deno.pid);
   },
 });