ci: refactoring from adding material tests to master ci (#28496)

This cherry-picks changes from #28197 to minimize the difference in
the ci infrastructure between master the the current patch branch

PR Close #28496

scripts/package-builder.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+
+# Build the dist/packages-dist directory in the same fashion as the legacy
+# /build.sh script, by building the npm packages with Bazel and copying files.
+# This is needed for scripts and tests which are not updated to the Bazel output
+# layout (which always matches the input layout).
+# Do not add new dependencies on this script, instead adapt scripts to use the
+# new layout, and write new tests as Bazel targets.
+#
+# Ideally integration tests should run under bazel, and just consume the npm
+# packages via `deps`. Until that works, we manually build the npm packages and then
+# copy the results to the appropriate `dist` location.
+
+set -u -e -o pipefail
+
+cd "$(dirname "$0")"
+
+# basedir is the workspace root
+readonly base_dir=$(pwd)/..
+# We need to resolve the Bazel binary in the node modules because running Bazel
+# through `yarn bazel` causes additional output that throws off command stdout.
+readonly bazel_bin=$(yarn bin)/bazel
+readonly bin=$(${bazel_bin} info bazel-bin)
+
+function buildTargetPackages() {
+  # List of targets to build, e.g. core, common, compiler, etc.
+  targets=$(${bazel_bin} query --output=label 'attr("tags", "\[.*release-with-framework.*\]", //packages/...) intersect kind(".*_package", //packages/...)')
+
+  # Path to the output directory into which we copy the npm packages.
+  dest_path="$1"
+
+  # Either "legacy" (view engine) or "aot" (ivy)
+  compile_mode="$2"
+
+  # Human-readable description of the build.
+  desc="$3"
+
+  echo "##################################"
+  echo "scripts/build-packages-dist.sh:"
+  echo "  building @angular/* npm packages"
+  echo "  mode: ${desc}"
+  echo "##################################"
+
+  # Use --config=release so that snapshot builds get published with embedded version info
+  echo "$targets" | xargs ${bazel_bin} build --config=release --define=compile=${compile_mode}
+
+  [[ -d "${base_dir}/${dest_path}" ]] || mkdir -p ${base_dir}/${dest_path}
+
+  dirs=`echo "$targets" | sed -e 's/\/\/packages\/\(.*\):npm_package/\1/'`
+
+  for pkg in ${dirs}; do
+    # Skip any that don't have an "npm_package" target
+    src_dir="${bin}/packages/${pkg}/npm_package"
+    dest_dir="${base_dir}/${dest_path}/${pkg}"
+    if [[ -d ${src_dir} ]]; then
+      echo "# Copy artifacts to ${dest_dir}"
+      rm -rf ${dest_dir}
+      cp -R ${src_dir} ${dest_dir}
+      chmod -R u+w ${dest_dir}
+    fi
+  done
+}
+