build: initial attempt to fix docs site deployment

material.angular.io/tools/lighthouse-audit.mjs

@@ -111,7 +111,9 @@ async function _main(args) {
       onError('Lighthouse failed to return any results.');
     }
     const success = await processResults(results, minScores, logFile);
-    console.log(`\nCompleted audit of ${url} in ${((Date.now() - startTime) / 1000).toFixed(1)}s\n`);
+    console.log(
+      `\nCompleted audit of ${url} in ${((Date.now() - startTime) / 1000).toFixed(1)}s\n`,
+    );
 
     if (!success) {
       onError('One or more scores are below the minimum required.');
@@ -191,12 +193,12 @@ function parseInput(args) {
   if (unknownCategories.length > 0) {
     onError(
       `Invalid arguments: <min-scores> contains unknown category(-ies): ${unknownCategories.join(
-        ', '
-      )}`
+        ', ',
+      )}`,
     );
   } else if (!allValuesValid) {
     onError(
-      `Invalid arguments: <min-scores> has non-numeric or out-of-range values: ${minScoresRaw}`
+      `Invalid arguments: <min-scores> has non-numeric or out-of-range values: ${minScoresRaw}`,
     );
   }
 
@@ -232,7 +234,7 @@ function parseMinScores(raw) {
 
   if (minScores.hasOwnProperty('all')) {
     AUDIT_CATEGORIES.forEach(
-      cat => minScores.hasOwnProperty(cat) || (minScores[cat] = minScores.all)
+      cat => minScores.hasOwnProperty(cat) || (minScores[cat] = minScores.all),
     );
     delete minScores.all;
   }
@@ -273,7 +275,7 @@ async function processResults(results, minScores, logFile) {
       console.log(
         `  - ${paddedTitle}  ${formatScore(score)}  (Required: ${formatScore(minScore)})  ${
           passed ? 'OK' : 'FAILED'
-        }`
+        }`,
       );
 
       return aggr && passed;

package.json

@@ -79,7 +79,7 @@
     "@angular/cli": "^19.1.0-rc.0",
     "@angular/compiler-cli": "^19.1.0-rc.0",
     "@angular/localize": "^19.1.0-rc.0",
-    "@angular/ng-dev": "https://github.com/angular/dev-infra-private-ng-dev-builds.git#36946be4df61f6549ae3829c026022e47674eae2",
+    "@angular/ng-dev": "https://github.com/angular/dev-infra-private-ng-dev-builds.git#1fa3a08b6a111de820da092799319ed47c058849",
     "@angular/platform-browser-dynamic": "^19.1.0-rc.0",
     "@angular/platform-server": "^19.1.0-rc.0",
     "@angular/router": "^19.1.0-rc.0",

scripts/docs-deploy/clone-docs-repo.mts

@@ -13,7 +13,13 @@ export const docsRepoUrl = 'https://github.com/angular/material.angular.io.git';
  *
  * @returns An absolute path to the temporary directory.
  */
+// TODO: Remove this function as it shouldn't be needed long term.
 export async function cloneDocsRepositoryForMajor(major: number): Promise<string> {
+  // As for v19, we use the checked-in code inside the monorepo.
+  if (major >= 19) {
+    return path.join(projectDir, 'material.angular.io');
+  }
+
   const repoTmpDir = path.join(projectDir, 'tmp/docs-repo');
   const baseCloneArgs = [docsRepoUrl, repoTmpDir, '--single-branch', '--depth=1'];
   const majorDocsBranchName = getDocsBranchNameForMajor(major);

scripts/docs-deploy/docs-deps-install.mts

@@ -1,4 +1,5 @@
-import {$} from 'zx';
+import {$, cd} from 'zx';
+import {resolveYarnScriptForProject} from '@angular/ng-dev';
 
 export interface InstallOptions {
   /** Whether dependencies should be installed with the lockfile being frozen. */
@@ -10,11 +11,12 @@ export async function installDepsForDocsSite(
   repoDirPath: string,
   options: InstallOptions = {frozenLockfile: true},
 ) {
+  const yarnBin = await resolveYarnScriptForProject(repoDirPath);
   const additionalArgs = [];
 
   if (options.frozenLockfile) {
-    additionalArgs.push('--frozen-lockfile');
+    additionalArgs.push(yarnBin.legacy ? '--frozen-lock-file' : '--immutable');
   }
 
-  await $`yarn --cwd ${repoDirPath} install ${additionalArgs}`;
+  await $`${yarnBin.binary} ${yarnBin.args} --cwd ${repoDirPath} install ${additionalArgs}`;
 }