build: remove rollup packaging from dev-infra (#35647)

The dev-infra package currently uses rollup for packaging. This has been
done initially as a way to workaround manifest paths being used in the
AMD JavaScript output.

The actual solution to this problem is setting module names that match
the `package.json` name. This ensures that the package can be consumed
correctly in Bazel, and through NPM. This allows us to get rid of the
rollup bundling, and we don't need to hard-code which dependencies
should be external or included.

Additionally, tools that are part of `dev-infra` can now specify
their external dependencies simply in the `package.json`. To reduce
version duplication, and out-of-sync versions, a new genrule has been
created that syncs the versions with the top-level project
`package.json`.

PR Close #35647

BUILD.bazel

@@ -8,6 +8,7 @@ exports_files([
     "scripts/ci/track-payload-size.sh",
     "scripts/ci/payload-size.sh",
     "scripts/ci/payload-size.js",
+    "package.json",
 ])
 
 alias(

dev-infra/BUILD.bazel

@@ -1,38 +1,38 @@
 load("@build_bazel_rules_nodejs//:index.bzl", "pkg_npm")
 load("@npm_bazel_typescript//:index.bzl", "ts_library")
-load("@npm_bazel_rollup//:index.bzl", "rollup_bundle")
 
 ts_library(
     name = "cli",
     srcs = [
         "cli.ts",
     ],
+    module_name = "@angular/dev-infra-private",
     deps = [
         "//dev-infra/pullapprove",
         "@npm//@types/node",
     ],
 )
 
-rollup_bundle(
-    name = "bundle",
-    config_file = "rollup.config.js",
-    entry_point = ":cli.ts",
-    format = "umd",
-    sourcemap = "hidden",
-    deps = [
-        ":cli",
-        "@npm//rollup-plugin-commonjs",
-        "@npm//rollup-plugin-node-resolve",
+genrule(
+    name = "package-json",
+    srcs = [
+        "tmpl-package.json",
+        "//:package.json",
     ],
+    outs = ["package.json"],
+    cmd = """
+        $(location //tools:inline-package-json-deps) $(location tmpl-package.json) \
+            $(location //:package.json) $@
+    """,
+    tools = ["//tools:inline-package-json-deps"],
 )
 
 pkg_npm(
     name = "npm_package",
-    srcs = [
-        "package.json",
-    ],
     visibility = ["//visibility:public"],
     deps = [
-        ":bundle",
+        ":cli",
+        ":package-json",
+        "//dev-infra/ts-circular-dependencies",
     ],
 )

dev-infra/cli.ts

@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 /**
  * @license
  * Copyright Google Inc. All Rights Reserved.

dev-infra/package.json

@@ -1,10 +0,0 @@
-{
-  "name": "@angular/dev-infra-private",
-  "version": "0.0.0",
-  "description": "INTERNAL USE ONLY - Angular internal DevInfra tooling/scripts - INTERNAL USE ONLY",
-  "license": "MIT",
-  "private": true,
-  "bin": {
-    "ng-dev": "./bundle.js"
-  }
-}

dev-infra/pullapprove/BUILD.bazel

@@ -5,6 +5,7 @@ ts_library(
     srcs = [
         "verify.ts",
     ],
+    module_name = "@angular/dev-infra-private/pullapprove",
     visibility = ["//dev-infra:__subpackages__"],
     deps = [
         "@npm//@types/minimatch",

dev-infra/rollup.config.js

@@ -1,16 +0,0 @@
-const node = require('rollup-plugin-node-resolve');
-const commonjs = require('rollup-plugin-commonjs');
-
-module.exports = {
-  external: ['shelljs', 'minimatch', 'yaml'],
-  preferBuiltins: true,
-  output: {
-    banner: "#!/usr/bin/env node",
-  },
-  plugins: [
-    node({
-      mainFields: ['browser', 'es2015', 'module', 'jsnext:main', 'main'],
-    }),
-    commonjs(),
-  ],
-};

dev-infra/tmpl-package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@angular/dev-infra-private",
+  "version": "0.0.0",
+  "description": "INTERNAL USE ONLY - Angular internal DevInfra tooling/scripts - INTERNAL USE ONLY",
+  "license": "MIT",
+  "private": true,
+  "bin": {
+    "ng-dev": "./cli.js",
+    "ts-circular-deps": "./ts-circular-dependencies/index.js"
+  },
+  "peerDependencies": {
+    "chalk": "<from-root>",
+    "glob": "<from-root>",
+    "minimatch": "<from-root>",
+    "shelljs": "<from-root>",
+    "typescript": "<from-root>",
+    "yaml": "<from-root>",
+    "yargs": "<from-root>",
+    "tslib": "<from-root>"
+  }
+}

tools/BUILD.bazel

@@ -1,6 +1,7 @@
 package(default_visibility = ["//visibility:public"])
 
 load("@npm_bazel_typescript//:index.bzl", "ts_config")
+load("//tools:defaults.bzl", "nodejs_binary")
 
 exports_files([
     "tsconfig.json",
@@ -13,6 +14,11 @@ ts_config(
     deps = ["tsconfig.json"],
 )
 
+nodejs_binary(
+    name = "inline-package-json-deps",
+    entry_point = "inline-package-json-deps.js",
+)
+
 platform(
     name = "rbe_ubuntu1604-angular",
     parents = ["@rbe_ubuntu1604_angular//config:platform"],

tools/inline-package-json-deps.js

@@ -0,0 +1,76 @@
+#!/usr/bin/env node
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+/*
+ * Script that updates a dependencies in a specified `package.json` file to be
+ * based on the dependencies of the specified base `package.json`. This allows
+ * developers to sync dependencies between two `package.json` files without having
+ * to manually copy versions all the time.
+ *
+ * e.g. `/package.json` defines the project dependencies. The `dev-infra/package.json`
+ * uses a subset of these dependencies and declares these as dependencies for the shared
+ * package. The dependencies should be the same as the one from `/package.json` as those
+ * versions are used for testing and development. We don't want mismatching versions.
+ */
+
+const fs = require('fs');
+const args = process.argv.slice(2);
+const [inputPackageJsonPath, basePackageJsonPath, outputPath] = args;
+const BASE_DEPENDENCY_MARKER = '<from-root>';
+
+if (!inputPackageJsonPath || !basePackageJsonPath || !outputPath) {
+  console.error('Usage: ./inline-package-json-deps.js <input-pkg-json> <base-pkg-json> <out-path>');
+  process.exit(1);
+}
+
+const inputPackageJson = JSON.parse(fs.readFileSync(inputPackageJsonPath, 'utf8'));
+const basePackageJson = JSON.parse(fs.readFileSync(basePackageJsonPath, 'utf8'));
+const result = {...inputPackageJson};
+
+if (inputPackageJson.dependencies) {
+  inlineDependenciesFromBase(inputPackageJson.dependencies);
+}
+if (inputPackageJson.peerDependencies) {
+  inlineDependenciesFromBase(inputPackageJson.peerDependencies);
+}
+
+fs.writeFileSync(outputPath, JSON.stringify(result, null, 2));
+
+/**
+ * Updates dependencies which have their version set to the base marker,
+ * to match the version from the base `package.json` file.
+ */
+function inlineDependenciesFromBase(deps) {
+  Object.keys(deps).forEach(name => {
+    const value = deps[name];
+    if (value !== BASE_DEPENDENCY_MARKER) {
+      return;
+    }
+    const linkedVersion = getDependency(basePackageJson, name);
+    if (linkedVersion === null) {
+      console.error(`Could not find base version for: ${name}`);
+      console.error(
+          `Either set a version for ${name} in "${basePackageJsonPath}", or use ` +
+          `an explicit version in "${inputPackageJson}"`);
+      process.exit(1);
+    }
+    deps[name] = linkedVersion;
+  });
+}
+
+/** Gets the version of the specified package from the given package object. */
+function getDependency(packageJson, name) {
+  if (packageJson.dependencies && packageJson.dependencies[name]) {
+    return packageJson.dependencies[name];
+  }
+  if (packageJson.devDependencies && packageJson.devDependencies[name]) {
+    return packageJson.devDependencies[name];
+  }
+  return null;
+}