build: add import maps extract_api_to_json

In order to get the correct types for the aria entries in the API json, we need to map external packages.

fixes #angular/angular#65566

Author: JeanMeche

src/aria/accordion/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/combobox/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite", "ts_project")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite", "ts_project")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/grid/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/listbox/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/menu/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/tabs/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/toolbar/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite", "ts_project")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite", "ts_project")
 
 package(default_visibility = ["//visibility:public"])
 

src/aria/tree/BUILD.bazel

@@ -1,5 +1,4 @@
-load("//tools:defaults.bzl", "ng_project", "ng_web_test_suite")
-load("//tools/adev-api-extraction:extract_api_to_json.bzl", "extract_api_to_json")
+load("//tools:defaults.bzl", "extract_api_to_json", "ng_project", "ng_web_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 

tools/adev-api-extraction/extract_api_to_json.bzl

@@ -1,3 +1,5 @@
+load("@aspect_rules_js//js:providers.bzl", "JsInfo")
+
 def _extract_api_to_json(ctx):
     """Implementation of the extract_api_to_json rule"""
 
@@ -35,11 +37,43 @@ def _extract_api_to_json(ctx):
     # specifying them
     # https://github.com/bazelbuild/rules_nodejs/blob/5.x/internal/linker/link_node_modules.bzl#L236
     path_map = {}
+    import_map_files = []
     for target, path in ctx.attr.import_map.items():
         files = target.files.to_list()
-        if len(files) != 1:
-            fail("Expected a single file in import_map target %s" % target.label)
-        path_map[path] = files[0].path
+
+        # Include transitive declarations if available in JsInfo
+        if JsInfo in target:
+            files.extend(target[JsInfo].transitive_types.to_list())
+
+        import_map_files.extend(files)
+        if len(files) == 1:
+            path_map[path] = files[0].path
+        else:
+            found_path = None
+            for f in files:
+                if f.path.endswith("/node_modules/" + path):
+                    found_path = f.path
+                    break
+
+                # Handle @angular package subentries
+                if path.startswith("@angular/"):
+                    parts = path.split("/")
+                    if len(parts) > 2:
+                        pkg_name = "/".join(parts[:2])
+                        if f.path.endswith("/node_modules/" + pkg_name):
+                            subentry = parts[-1]
+                            found_path = f.path + "/types/" + subentry + ".d.ts"
+                            break
+
+            if not found_path:
+                candidates = [f for f in files if f.path.endswith("/index.d.ts")]
+                sorted_candidates = sorted(candidates, key = lambda f: len(f.path))
+                found_path = sorted_candidates[0].path
+
+            if found_path:
+                path_map[path] = found_path
+            else:
+                fail("Expected a single file in import_map target %s, but found %s. Could not determine entry point. Files: %s" % (target.label, len(files), [f.path for f in files]))
     args.add(json.encode(path_map))
 
     # Pass the set of (optional) extra entries
@@ -48,7 +82,7 @@ def _extract_api_to_json(ctx):
     # Define an action that runs the nodejs_binary executable. This is
     # the main thing that this rule does.
     ctx.actions.run(
-        inputs = depset(ctx.files.srcs + ctx.files.extra_entries),
+        inputs = depset(ctx.files.srcs + ctx.files.extra_entries + import_map_files),
         executable = ctx.executable._extract_api_to_json,
         outputs = [json_output],
         arguments = [args],

tools/defaults.bzl

@@ -14,6 +14,7 @@ load("@rules_pkg//:pkg.bzl", "pkg_tar")
 load("@rules_sass//src:index.bzl", _sass_binary = "sass_binary", _sass_library = "sass_library")
 load("//:packages.bzl", "NO_STAMP_NPM_PACKAGE_SUBSTITUTIONS", "NPM_PACKAGE_SUBSTITUTIONS")
 load("//:pkg-externals.bzl", "PKG_EXTERNALS")
+load("//tools/adev-api-extraction:extract_api_to_json.bzl", _extract_api_to_json = "extract_api_to_json")
 load("//tools/bazel:ng_package_interop.bzl", "ng_package_interop")
 load("//tools/bazel:web_test_suite.bzl", _ng_web_test_suite = "ng_web_test_suite")
 load("//tools/extract-tokens:index.bzl", _extract_tokens = "extract_tokens")
@@ -247,3 +248,24 @@ def protractor_web_test_suite(name, deps, **kwargs):
         ],
         **kwargs
     )
+
+def extract_api_to_json(**kwargs):
+    if "core_interop" not in native.existing_rules():
+        native.alias(
+            name = "core_interop",
+            actual = "//:node_modules/@angular/core",
+        )
+
+    _extract_api_to_json(
+        # We need to specify import mappings for Angular packages that import other Angular
+        # packages.
+        import_map = {
+            # We only need to specify top-level entry-points, and only those that
+            # are imported from other packages.
+            "//:node_modules/@angular/core": "@angular/core",
+            ":core_interop": "@angular/core/rxjs-interop",
+            "//src/cdk/bidi": "@angular/cdk/bidi",
+            "//src/aria/private": "@angular/aria/private",
+        },
+        **kwargs
+    )