build: move zone.js to angular repo (#30962)

PR Close #30962

packages/zone.js/scripts/closure/closure_compiler.sh

@@ -0,0 +1,31 @@
+# compile closure test source file
+$(npm bin)/tsc -p .
+# Run the Google Closure compiler java runnable with zone externs
+java -jar node_modules/google-closure-compiler/compiler.jar --flagfile 'scripts/closure/closure_flagfile' --externs 'lib/closure/zone_externs.js'
+
+# the names of Zone exposed API should be kept correctly with zone externs, test program should exit with 0.
+node build/closure/closure-bundle.js
+
+if [ $? -eq 0 ]
+then
+  echo "Successfully pass closure compiler with zone externs"
+else
+  echo "failed to pass closure compiler with zone externs"
+  exit 1
+fi
+
+# Run the Google Closure compiler java runnable without zone externs.
+java -jar node_modules/google-closure-compiler/compiler.jar --flagfile 'scripts/closure/closure_flagfile'
+
+# the names of Zone exposed API should be renamed and fail to be executed, test program should exit with 1.
+node build/closure/closure-bundle.js
+
+if [ $? -eq 1 ]
+then
+  echo "Successfully detect closure compiler error without zone externs"
+else
+  echo "failed to detect closure compiler error without zone externs"
+  exit 1
+fi
+
+exit 0

packages/zone.js/scripts/closure/closure_flagfile

@@ -0,0 +1,5 @@
+--compilation_level ADVANCED_OPTIMIZATIONS
+--js_output_file "build/closure/closure-bundle.js"
+--rewrite_polyfills false
+--js "build/test/closure/zone.closure.js"
+--formatting PRETTY_PRINT