ci: re-enable react-native-macos-init pipeline (#2243)

* ci: re-enable `react-native-macos-init` pipeline

* break cycle?

* fixup! ci: re-enable `react-native-macos-init` pipeline

* fix `getBuildSettings()`

* Update test-react-native-macos-init.yml

Author: tido64

.ado/apple-pr.yml

@@ -26,12 +26,10 @@ stages:
     dependsOn: []
     jobs:
       - template: /.ado/jobs/test-javascript.yml@self
-
       - template: /.ado/jobs/npm-publish-dry-run.yml@self
 
-  # - stage: Integration
-  #   dependsOn: []
-  #   jobs:
-      #- template: /.ado/jobs/test-react-native-macos-init.yml@self
-
-      # - template: /.ado/jobs/react-native-test-app-integration.yml@self
+  - stage: Integration
+    dependsOn: []
+    jobs:
+      - template: /.ado/jobs/test-react-native-macos-init.yml@self
+      #- template: /.ado/jobs/react-native-test-app-integration.yml@self

.ado/jobs/test-react-native-macos-init.yml

@@ -35,9 +35,13 @@ jobs:
           .ado/scripts/verdaccio.sh publish --branch origin/$(System.PullRequest.TargetBranch)
         displayName: Publish react-native-macos to Verdaccio
 
+      - script: |
+          node .ado/scripts/export-versions.mjs
+        displayName: Determine react-native version
+
       - script: |
           set -eox pipefail
-          npx --yes @react-native-community/cli init testcli --version 0.75 --skip-install
+          npx --yes @react-native-community/cli init testcli --version $(react_native_version) --skip-install
         workingDirectory: $(Agent.BuildDirectory)
         displayName: Initialize a new project
 
@@ -54,7 +58,6 @@ jobs:
           # We need to set the npm registry here otherwise it won't stick
           $(Build.Repository.LocalPath)/.ado/scripts/verdaccio.sh configure
           node $(Build.Repository.LocalPath)/packages/react-native-macos-init/bin.js --verbose --version latest --overwrite --prerelease
-          yarn why react-native-macos
         workingDirectory: $(Agent.BuildDirectory)/testcli
         displayName: Apply macOS template (new project)
 

.ado/scripts/export-versions.mjs

@@ -0,0 +1,27 @@
+// @ts-check
+import * as fs from "node:fs";
+import { URL } from "node:url";
+
+/**
+ * @param {string} version
+ * @returns {string}
+ */
+function coerce(version) {
+  const [major, minor = 0] = version.split("-")[0].split(".");
+  return `${major}.${minor}`;
+}
+
+/**
+ * @param {string} name
+ * @param {unknown} value
+ */
+function exportValue(name, value) {
+  console.log(`##vso[task.setvariable variable=${name}]${value}`);
+}
+
+const manifestPath = new URL("../../packages/react-native/package.json", import.meta.url);
+const json = fs.readFileSync(manifestPath, { encoding: "utf-8" });
+const { dependencies, peerDependencies } = JSON.parse(json);
+
+exportValue("react_version", peerDependencies["react"]);
+exportValue("react_native_version", coerce(dependencies["@react-native/codegen"]));