feat(typescript): add OutputGroupInfo to ts_project with type definit…

…ions

fix #1978

packages/typescript/internal/ts_project.bzl

@@ -143,6 +143,7 @@ def _ts_project_impl(ctx):
     # Improves error messaging if a ts_project needs declaration = True
     if len(typings_outputs) or len(ctx.attr.deps):
         providers.append(declaration_info(depset(typings_outputs), ctx.attr.deps))
+        providers.append(OutputGroupInfo(types = depset(typings_outputs)))
 
     return providers
 

packages/typescript/test/ts_project/output_group/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@build_bazel_rules_nodejs//:index.bzl", "generated_file_test")
+load("//packages/typescript:index.bzl", "ts_project")
+
+# This uses defaults for all attributes.
+# It will find `index.ts` and produce `index.js` & `index.d.ts`
+ts_project(
+    name = "tsconfig",
+    srcs = ["index.ts"],
+    declaration = True,
+)
+
+filegroup(
+    name = "types",
+    srcs = [":tsconfig"],
+    output_group = "types",
+)
+
+generated_file_test(
+    name = "test",
+    src = "index.golden.d.ts",
+    # Refers to the output from filegroup above
+    generated = ":types",
+)

packages/typescript/test/ts_project/output_group/index.golden.d.ts

@@ -0,0 +1 @@
+export declare const a: string;

packages/typescript/test/ts_project/output_group/index.ts

@@ -0,0 +1 @@
+export const a: string = 'hello';

packages/typescript/test/ts_project/output_group/tsconfig.json

@@ -0,0 +1,6 @@
+{
+    "compilerOptions": {
+        "types": [],
+        "declaration": true
+    }
+}