lib: make navigator not runtime-lookup process.version/arch/platform

ljharb · ljharb · commit fa909680689d · 2024-07-10T22:51:10.000-07:00
Preserves nodejs#53649.
diff --git a/lib/internal/navigator.js b/lib/internal/navigator.js
@@ -7,13 +7,8 @@ const {
   StringPrototypeSlice,
   StringPrototypeToUpperCase,
   Symbol,
-  globalThis,
 } = primordials;
 
-const {
-  Intl,
-} = globalThis;
-
 const {
   ERR_ILLEGAL_CONSTRUCTOR,
 } = require('internal/errors').codes;
@@ -27,60 +22,68 @@ const {
 } = internalBinding('os');
 
 const kInitialize = Symbol('kInitialize');
-const nodeVersion = process.version;
+
+const {
+  platform,
+  arch,
+  version: nodeVersion,
+} = require('internal/process/per_thread');
+
+const {
+  language,
+} = internalBinding('config');
 
 /**
- * @param {object} process
- * @param {string} process.platform
- * @param {string} process.arch
+ * @param {string} arch
+ * @param {string} platform
  * @returns {string}
  */
-function getNavigatorPlatform(process) {
-  if (process.platform === 'darwin') {
+function getNavigatorPlatform(arch, platform) {
+  if (platform === 'darwin') {
     // On macOS, modern browsers return 'MacIntel' even if running on Apple Silicon.
     return 'MacIntel';
-  } else if (process.platform === 'win32') {
+  } else if (platform === 'win32') {
     // On Windows, modern browsers return 'Win32' even if running on a 64-bit version of Windows.
     // https://developer.mozilla.org/en-US/docs/Web/API/Navigator/platform#usage_notes
     return 'Win32';
-  } else if (process.platform === 'linux') {
-    if (process.arch === 'ia32') {
+  } else if (platform === 'linux') {
+    if (arch === 'ia32') {
       return 'Linux i686';
-    } else if (process.arch === 'x64') {
+    } else if (arch === 'x64') {
       return 'Linux x86_64';
     }
-    return `Linux ${process.arch}`;
-  } else if (process.platform === 'freebsd') {
-    if (process.arch === 'ia32') {
+    return `Linux ${arch}`;
+  } else if (platform === 'freebsd') {
+    if (arch === 'ia32') {
       return 'FreeBSD i386';
-    } else if (process.arch === 'x64') {
+    } else if (arch === 'x64') {
       return 'FreeBSD amd64';
     }
-    return `FreeBSD ${process.arch}`;
-  } else if (process.platform === 'openbsd') {
-    if (process.arch === 'ia32') {
+    return `FreeBSD ${arch}`;
+  } else if (platform === 'openbsd') {
+    if (arch === 'ia32') {
       return 'OpenBSD i386';
-    } else if (process.arch === 'x64') {
+    } else if (arch === 'x64') {
       return 'OpenBSD amd64';
     }
-    return `OpenBSD ${process.arch}`;
-  } else if (process.platform === 'sunos') {
-    if (process.arch === 'ia32') {
+    return `OpenBSD ${arch}`;
+  } else if (platform === 'sunos') {
+    if (arch === 'ia32') {
       return 'SunOS i86pc';
     }
-    return `SunOS ${process.arch}`;
-  } else if (process.platform === 'aix') {
+    return `SunOS ${arch}`;
+  } else if (platform === 'aix') {
     return 'AIX';
   }
-  return `${StringPrototypeToUpperCase(process.platform[0])}${StringPrototypeSlice(process.platform, 1)} ${process.arch}`;
+  return `${StringPrototypeToUpperCase(platform[0])}${StringPrototypeSlice(platform, 1)} ${arch}`;
 }
 
 class Navigator {
   // Private properties are used to avoid brand validations.
   #availableParallelism;
   #userAgent;
   #platform;
-  #language;
+  #language = language;
   #languages;
 
   constructor() {
@@ -102,7 +105,6 @@ class Navigator {
    * @return {string}
    */
   get language() {
-    this.#language ??= Intl?.Collator().resolvedOptions().locale || 'en-US';
     return this.#language;
   }
 
@@ -126,7 +128,7 @@ class Navigator {
    * @return {string}
    */
   get platform() {
-    this.#platform ??= getNavigatorPlatform(process);
+    this.#platform ??= getNavigatorPlatform(arch, platform);
     return this.#platform;
   }
 }
diff --git a/lib/internal/process/per_thread.js b/lib/internal/process/per_thread.js
@@ -28,8 +28,13 @@ const {
   StringPrototypeStartsWith,
   Symbol,
   SymbolIterator,
+  globalThis,
 } = primordials;
 
+const {
+  Intl,
+} = globalThis;
+
 const {
   ErrnoException,
   codes: {
@@ -423,11 +428,16 @@ function toggleTraceCategoryState(asyncHooksEnabled) {
   }
 }
 
+const { arch, platform, version } = process;
+
 module.exports = {
   toggleTraceCategoryState,
   assert,
   buildAllowedFlags,
   wrapProcessMethods,
   hrtime,
   hrtimeBigInt,
+  arch,
+  platform,
+  version,
 };
diff --git a/lib/internal/process/pre_execution.js b/lib/internal/process/pre_execution.js
@@ -327,6 +327,7 @@ function setupNavigator() {
 
   // https://html.spec.whatwg.org/multipage/system-state.html#the-navigator-object
   exposeLazyInterfaces(globalThis, 'internal/navigator', ['Navigator']);
+  internalBinding('config').language = Intl?.Collator().resolvedOptions().locale || 'en-US';
   defineReplaceableLazyAttribute(globalThis, 'internal/navigator', ['navigator'], false);
 }
 
diff --git a/test/parallel/test-navigator.js b/test/parallel/test-navigator.js
@@ -2,8 +2,36 @@
 
 'use strict';
 
-const common = require('../common');
+/* eslint node-core/require-common-first: 0 */
+
 const assert = require('assert');
+
+{
+
+  // Ensures `navigator` has not been evaluated yet
+  assert.strictEqual(require.resolve('../common') in require.cache, false);
+
+  const { version, platform, arch } = process;
+  try {
+    let called = false;
+    Object.defineProperty(process, 'arch', { get() { called += 'arch|'; return arch; } });
+    Object.defineProperty(process, 'platform', { get() { called = 'platform|'; return platform; } });
+    Object.defineProperty(process, 'version', { get() { called = 'version|'; return version; } });
+
+    navigator; // eslint-disable-line no-unused-expressions
+
+    assert.strictEqual(
+      called,
+      false
+    );
+  } finally {
+    Object.defineProperty(process, 'arch', { value: arch });
+    Object.defineProperty(process, 'platform', { value: platform });
+    Object.defineProperty(process, 'version', { value: version });
+  }
+}
+
+const common = require('../common');
 const { getNavigatorPlatform } = require('internal/navigator');
 const { execFile } = require('child_process');
 
@@ -57,23 +85,23 @@ if (process.platform === 'darwin') {
   assert.strictEqual(navigator.platform, `${process.platform[0].toUpperCase()}${process.platform.slice(1)} ${process.arch}`);
 }
 
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'darwin' }), 'MacIntel');
-assert.strictEqual(getNavigatorPlatform({ arch: 'arm64', platform: 'darwin' }), 'MacIntel');
-assert.strictEqual(getNavigatorPlatform({ arch: 'ia32', platform: 'linux' }), 'Linux i686');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'linux' }), 'Linux x86_64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'arm64', platform: 'linux' }), 'Linux arm64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'win32' }), 'Win32');
-assert.strictEqual(getNavigatorPlatform({ arch: 'arm64', platform: 'win32' }), 'Win32');
-assert.strictEqual(getNavigatorPlatform({ arch: 'ia32', platform: 'freebsd' }), 'FreeBSD i386');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'freebsd' }), 'FreeBSD amd64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'arm64', platform: 'freebsd' }), 'FreeBSD arm64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'ia32', platform: 'openbsd' }), 'OpenBSD i386');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'openbsd' }), 'OpenBSD amd64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'arm64', platform: 'openbsd' }), 'OpenBSD arm64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'ia32', platform: 'sunos' }), 'SunOS i86pc');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'sunos' }), 'SunOS x64');
-assert.strictEqual(getNavigatorPlatform({ arch: 'ppc', platform: 'aix' }), 'AIX');
-assert.strictEqual(getNavigatorPlatform({ arch: 'x64', platform: 'reactos' }), 'Reactos x64');
+assert.strictEqual(getNavigatorPlatform('x64', 'darwin'), 'MacIntel');
+assert.strictEqual(getNavigatorPlatform('arm64', 'darwin'), 'MacIntel');
+assert.strictEqual(getNavigatorPlatform('ia32', 'linux'), 'Linux i686');
+assert.strictEqual(getNavigatorPlatform('x64', 'linux'), 'Linux x86_64');
+assert.strictEqual(getNavigatorPlatform('arm64', 'linux'), 'Linux arm64');
+assert.strictEqual(getNavigatorPlatform('x64', 'win32'), 'Win32');
+assert.strictEqual(getNavigatorPlatform('arm64', 'win32'), 'Win32');
+assert.strictEqual(getNavigatorPlatform('ia32', 'freebsd'), 'FreeBSD i386');
+assert.strictEqual(getNavigatorPlatform('x64', 'freebsd'), 'FreeBSD amd64');
+assert.strictEqual(getNavigatorPlatform('arm64', 'freebsd'), 'FreeBSD arm64');
+assert.strictEqual(getNavigatorPlatform('ia32', 'openbsd'), 'OpenBSD i386');
+assert.strictEqual(getNavigatorPlatform('x64', 'openbsd'), 'OpenBSD amd64');
+assert.strictEqual(getNavigatorPlatform('arm64', 'openbsd'), 'OpenBSD arm64');
+assert.strictEqual(getNavigatorPlatform('ia32', 'sunos'), 'SunOS i86pc');
+assert.strictEqual(getNavigatorPlatform('x64', 'sunos'), 'SunOS x64');
+assert.strictEqual(getNavigatorPlatform('ppc', 'aix'), 'AIX');
+assert.strictEqual(getNavigatorPlatform('x64', 'reactos'), 'Reactos x64');
 
 assert.strictEqual(typeof navigator.language, 'string');
 assert.strictEqual(navigator.language.length !== 0, true);

Original file line number	Diff line number	Diff line change
`@@ -327,6 +327,7 @@ function setupNavigator() {`
`327`	`327`
`328`	`328`	`// https://html.spec.whatwg.org/multipage/system-state.html#the-navigator-object`
`329`	`329`	`exposeLazyInterfaces(globalThis, 'internal/navigator', ['Navigator']);`
	`330`	`+ internalBinding('config').language = Intl?.Collator().resolvedOptions().locale \|\| 'en-US';`
`330`	`331`	`defineReplaceableLazyAttribute(globalThis, 'internal/navigator', ['navigator'], false);`
`331`	`332`	`}`
`332`	`333`