feat(bazel): add an ng_package rule (angular#22221)

This produces a directory following the Angular Package layout spec.

Includes integration test coverage by making a minimal ng_package in integration/bazel.
Unit tests verify the content of the @angular/core and @angular/common packages.

This doesn't totally match our current output, but is good enough to unblock some
early adopters.

It re-uses logic from the rollup_bundle rule in rules_nodejs. It should also
eventually have the .pack and .publish secondary targets like npm_package rule.

PR Close angular#22221

WORKSPACE

@@ -1,14 +1,14 @@
 workspace(name = "angular")
 
 # Using a pre-release snapshot to pick up a commit that makes all nodejs_binary
-# programs produce source-mapped stack traces.
-RULES_NODEJS_VERSION = "926349cea4cd360afcd5647ccdd09d2d2fb471aa"
+# programs produce source-mapped stack traces and uglify sourcemaps.
+RULES_NODEJS_VERSION = "4303cbef12e5e252ad66cc35cff1123e3a44ee83"
 
 http_archive(
     name = "build_bazel_rules_nodejs",
     url = "https://github.com/bazelbuild/rules_nodejs/archive/%s.zip" % RULES_NODEJS_VERSION,
     strip_prefix = "rules_nodejs-%s" % RULES_NODEJS_VERSION,
-    sha256 = "5ba3c8c209078c2e3f0c6aa4abd01a1a561f92a5bfda04e25604af5f4734d69d",
+    sha256 = "fccb9a7122f339d89c9994dc0fea33c737dd76e66281d0da0cb841da5f1edec7",
 )
 
 load("@build_bazel_rules_nodejs//:defs.bzl", "check_bazel_version", "node_repositories")

integration/bazel/BUILD.bazel

@@ -2,25 +2,15 @@ package(default_visibility = ["//visibility:public"])
 
 filegroup(
     name = "node_modules",
-    # Workaround https://github.com/bazelbuild/bazel/issues/4242
-    # Can't just glob(["node_modules/**/*.{js,d.ts,json}"])
-    srcs = glob(["/".join([
-        "node_modules",
-        pkg,
-        "**",
-        ext,
-    ]) for pkg in [
-        "@angular",
-        "@types",
-        "bytebuffer",
-        "protobufjs",
-        "reflect-metadata",
-        "tsickle",
-        "typescript",
-        "zone.js",
-    ] for ext in [
-        "*.js",
-        "*.json",
-        "*.d.ts",
-    ]]),
+    srcs = glob(
+        ["node_modules/**/*"],
+        # Exclude directories that commonly contain filenames which are
+        # illegal bazel labels
+        exclude = [
+            # e.g. node_modules/adm-zip/test/assets/attributes_test/New folder/hidden.txt
+            "node_modules/**/test/**",
+            # e.g. node_modules/xpath/docs/function resolvers.md
+            "node_modules/**/docs/**",
+        ],
+    ),
 )

integration/bazel/WORKSPACE

@@ -1,10 +1,14 @@
 workspace(name = "bazel_integration_test")
 
+# Using a pre-release snapshot to pick up a commit that makes all nodejs_binary
+# programs produce source-mapped stack traces and uglify sourcemaps.
+RULES_NODEJS_VERSION = "4303cbef12e5e252ad66cc35cff1123e3a44ee83"
+
 http_archive(
     name = "build_bazel_rules_nodejs",
-    url = "https://github.com/bazelbuild/rules_nodejs/archive/0.4.1.zip",
-    strip_prefix = "rules_nodejs-0.4.1",
-    sha256 = "e9bc013417272b17f302dc169ad597f05561bb277451f010043f4da493417607",
+    url = "https://github.com/bazelbuild/rules_nodejs/archive/%s.zip" % RULES_NODEJS_VERSION,
+    strip_prefix = "rules_nodejs-%s" % RULES_NODEJS_VERSION,
+    sha256 = "fccb9a7122f339d89c9994dc0fea33c737dd76e66281d0da0cb841da5f1edec7",
 )
 
 load("@build_bazel_rules_nodejs//:defs.bzl", "node_repositories")

integration/bazel/src/hello-world/BUILD.bazel

@@ -1,6 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@angular//:index.bzl", "ng_module")
+load("@angular//:index.bzl", "ng_module", "ng_package")
 load("@io_bazel_rules_sass//sass:sass.bzl", "sass_binary")
 
 sass_binary(
@@ -17,3 +17,9 @@ ng_module(
     # npm distro of angular there is no ts_library rule to propagate the dep.
     deps = ["@rxjs"],
 )
+
+ng_package(
+    name = "npm_package",
+    entry_point = "src/hello-world/index.js",
+    deps = [":hello-world"],
+)

integration/bazel/src/hello-world/index.ts

@@ -0,0 +1,2 @@
+export * from './hello-world.component';
+export * from './hello-world.module';