fix(typescript): add json to ts_project DefaultInfo, fix #1988

packages/typescript/internal/ts_project.bzl

@@ -29,6 +29,7 @@ _ATTRS = {
 _OUTPUTS = {
     "buildinfo_out": attr.output(),
     "js_outs": attr.output_list(),
+    "json_outs": attr.output_list(),
     "map_outs": attr.output_list(),
     "typing_maps_outs": attr.output_list(),
     "typings_outs": attr.output_list(),
@@ -96,10 +97,17 @@ def _ts_project_impl(ctx):
     inputs = ctx.files.srcs + depset(transitive = deps_depsets).to_list() + [ctx.file.tsconfig]
     if ctx.attr.extends:
         inputs.extend(ctx.files.extends)
-    outputs = ctx.outputs.js_outs + ctx.outputs.map_outs + ctx.outputs.typings_outs + ctx.outputs.typing_maps_outs
+
+    json_outs = ctx.outputs.json_outs
+
+    # If there are no predeclared json_outs (probably bc of no .json or no outdir),
+    # let's try to search for them in srcs so we can declare them as output
+    if not json_outs:
+        json_outs = [ctx.actions.declare_file(src.basename, sibling = src) for src in ctx.files.srcs if src.basename.endswith(".json")]
+    outputs = json_outs + ctx.outputs.js_outs + ctx.outputs.map_outs + ctx.outputs.typings_outs + ctx.outputs.typing_maps_outs
     if ctx.outputs.buildinfo_out:
         outputs.append(ctx.outputs.buildinfo_out)
-    runtime_outputs = depset(ctx.outputs.js_outs + ctx.outputs.map_outs)
+    runtime_outputs = depset(json_outs + ctx.outputs.js_outs + ctx.outputs.map_outs)
     typings_outputs = ctx.outputs.typings_outs + [s for s in ctx.files.srcs if s.path.endswith(".d.ts")]
 
     if len(outputs) > 0:
@@ -390,6 +398,9 @@ def ts_project_macro(
         tsconfig = tsconfig,
         extends = extends,
         outdir = outdir,
+        # JSON files are special. They are output if outdir is set since tsc will
+        # copy them to outdir. Otherwise they are kind of both.
+        json_outs = [_join(outdir, f) for f in srcs if f.endswith(".json")] if outdir and not emit_declaration_only else [],
         js_outs = _out_paths(srcs, outdir, ".js") if not emit_declaration_only else [],
         map_outs = _out_paths(srcs, outdir, ".js.map") if source_map and not emit_declaration_only else [],
         typings_outs = _out_paths(srcs, outdir, ".d.ts") if declaration or composite else [],

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

@@ -0,0 +1,51 @@
+load("@build_bazel_rules_nodejs//:index.bzl", "generated_file_test")
+load("//packages/typescript:index.bzl", "ts_project")
+
+SRCS = glob(["**/*.ts*"]) + [
+    "subdir/foo.json",
+    "bar.json",
+]
+
+ts_project(
+    name = "tsconfig",
+    srcs = SRCS,
+    outdir = "foobar",
+)
+
+ts_project(
+    name = "tsconfig-no-outdir",
+    srcs = SRCS,
+    tsconfig = "tsconfig.json",
+)
+
+generated_file_test(
+    name = "test-subdir",
+    src = "foo.golden.json",
+    # Refers to the output from tsconfig ts_project above
+    generated = ":foobar/subdir/foo.json",
+)
+
+generated_file_test(
+    name = "test",
+    src = "bar.golden.json",
+    # Refers to the output from tsconfig ts_project above
+    generated = ":foobar/bar.json",
+)
+
+# We cannot reuse foo.golden.json bc tsc inserts a newline when
+# it copies to outdir
+generated_file_test(
+    name = "test-subdir-no-outdir",
+    src = "foo-no-outdir.golden.json",
+    # Refers to the output from tsconfig-no-outdir ts_project above
+    generated = ":subdir/foo.json",
+)
+
+# We cannot reuse bar.golden.json bc tsc inserts a newline when
+# it copies to outdir
+generated_file_test(
+    name = "test-no-outdir",
+    src = "bar-no-outdir.golden.json",
+    # Refers to the output from tsconfig-no-outdir ts_project above
+    generated = ":bar.json",
+)

packages/typescript/test/ts_project/json/bar-no-outdir.golden.json

@@ -0,0 +1,3 @@
+{
+    "name": "bar"
+}

packages/typescript/test/ts_project/json/bar.golden.json

@@ -0,0 +1,3 @@
+{
+    "name": "bar"
+}

packages/typescript/test/ts_project/json/bar.json

@@ -0,0 +1,3 @@
+{
+    "name": "bar"
+}

packages/typescript/test/ts_project/json/foo-no-outdir.golden.json

@@ -0,0 +1,3 @@
+{
+    "name": "json"
+}

packages/typescript/test/ts_project/json/foo.golden.json

@@ -0,0 +1,3 @@
+{
+    "name": "json"
+}

packages/typescript/test/ts_project/json/subdir/a.ts

@@ -0,0 +1,4 @@
+export const a: string = 'hello';
+import {name} from './foo.json'
+export {name} from '../bar.json'
+export const jsonName = name

packages/typescript/test/ts_project/json/subdir/foo.json

@@ -0,0 +1,3 @@
+{
+    "name": "json"
+}

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

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