Normalise shell name/version strings, add commit hash when prebuilt (#53480)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53480

Changelog: [Internal]

Improves the way `--version` and the User-Agent header work in `debugger-shell`.

* The same app name and version string format will be used across the `dev` and `prebuilt` flavours. Previously, `dev` would report itself as being `Electron v37.2.6` while `prebuilt` would report `react-native/debugger-shell v0.82.0-main`.
* `prebuilt` now also reports the original Meta-internal commit hash as a suffix `-rFBS..........` added to the semver string taken from `package.json`, while `dev` will have a `-dev` suffix in the same place.
  * We do **not** modify the version in `package.json` during the build, nor do we pass the commit hash to `electron/packager`, because this would impose inconvenient platform-specific restrictions on the version string's format.

Reviewed By: huntie

Differential Revision: D81120181

fbshipit-source-id: e730dd35da78dfbb8de326f9a3ab76b747fdb0b3

scripts/debugger-shell/build-binary.js

@@ -15,14 +15,23 @@ try {
 } catch {
   isMetaInternal = false;
 }
+
+let additionalConfig /*: $ReadOnly<{
+  appVersionHash: ?string,
+}> */ = {
+  appVersionHash: null,
+};
+
 if (isMetaInternal) {
   // $FlowFixMe[cannot-resolve-module] - not resolvable in OSS
-  require('./metainternal/build-binary-setup');
+  ({additionalConfig} = require('./metainternal/build-binary-setup'));
 }
 
 const {packager} = require('@electron/packager');
 const fs = require('fs');
 const path = require('path');
+const signedsource = require('signedsource');
+const util = require('util');
 
 const APP_NAME = 'React Native DevTools';
 const COMPANY_NAME = 'Meta Platforms Technologies LLC';
@@ -50,15 +59,20 @@ async function main() {
     'dist/node',
     'metainternal/build-mac',
     '__tests__',
-    'README.md',
   ].map(
     dirRelativeToPackageRoot =>
       path.join(PACKAGE_ROOT, dirRelativeToPackageRoot) + path.sep,
   );
-  const IGNORE_FILES = ['BUCK'].map(fileRelativeToPackageRoot =>
+  const IGNORE_FILES = [
+    'BUCK',
+    'README.md',
+    'dist/electron/BuildInfo.js.tpl',
+  ].map(fileRelativeToPackageRoot =>
     path.join(PACKAGE_ROOT, fileRelativeToPackageRoot),
   );
 
+  await writeBuildInfo();
+
   await packager({
     dir: PACKAGE_ROOT,
     icon: path.join(PACKAGE_ROOT, 'src/electron/resources/icon'),
@@ -86,6 +100,25 @@ async function main() {
   });
 }
 
+async function writeBuildInfo() {
+  const template = await fs.promises.readFile(
+    path.join(PACKAGE_ROOT, 'src/electron/BuildInfo.js.tpl'),
+    'utf8',
+  );
+  const buildInfo = signedsource.signFile(
+    util.format(
+      template,
+      signedsource.getSigningToken(),
+      // revision
+      JSON.stringify(additionalConfig.appVersionHash),
+    ),
+  );
+  await fs.promises.writeFile(
+    path.join(PACKAGE_ROOT, 'dist/electron/BuildInfo.js'),
+    buildInfo,
+  );
+}
+
 if (require.main === module) {
   main().catch(err => {
     console.error(err);