Test case for ts/js interop.

MODULE.bazel

@@ -29,6 +29,7 @@ bazel_dep(name = "rules_go", version = "0.46.0", dev_dependency = True, repo_nam
 bazel_dep(name = "rules_nodejs", version = "6.2.0", dev_dependency = True)
 bazel_dep(name = "stardoc", version = "0.6.2", dev_dependency = True, repo_name = "io_bazel_stardoc")
 bazel_dep(name = "toolchains_protoc", version = "0.3.0", dev_dependency = True)
+bazel_dep(name = "aspect_rules_swc", version = "2.0.0", dev_dependency = True)
 
 # Should not be required, stardoc leaks a dependency
 bazel_dep(name = "rules_java", version = "7.6.1", dev_dependency = True)

examples/ts_js_interop/.swcrc

@@ -0,0 +1,15 @@
+{
+    "$schema": "https://json.schemastore.org/swcrc",
+    "jsc": {
+        "parser": {
+            "syntax": "typescript",
+            "tsx": true
+        },
+        "target": "es2018"
+    },
+    "module": {
+        "type": "commonjs"
+    },
+    "minify": false
+}
+

examples/ts_js_interop/BUILD.bazel

@@ -0,0 +1,25 @@
+load("@aspect_rules_ts//ts:defs.bzl", "ts_project")
+load("@aspect_rules_swc//swc:defs.bzl", "swc")
+load("@bazel_skylib//lib:partial.bzl", "partial")
+
+ts_project(
+    name = "src",
+    srcs = [
+        "a.js",
+        "b.ts",
+    ],
+    allow_js = True,
+    declaration = True,
+    emit_declaration_only = True,
+    resolve_json_module = True,
+    transpiler = partial.make(
+        swc,
+        swcrc = ":.swcrc",
+    ),
+    tsconfig = ":tsconfig.json",
+)
+
+filegroup(
+    name = "transpiled_srcs",
+    srcs = ["b.js"],
+)

examples/ts_js_interop/a.js

@@ -0,0 +1,2 @@
+const a = 1;
+export default a;

examples/ts_js_interop/a.ts

@@ -0,0 +1,2 @@
+const a = 1;
+export default a;

examples/ts_js_interop/b.ts

@@ -0,0 +1,3 @@
+import a from './a'
+
+console.log(a)

examples/ts_js_interop/tsconfig.json

@@ -0,0 +1,47 @@
+{
+  "compilerOptions": {
+    "emitDeclarationOnly": true,
+    "declaration": true,
+    "jsx": "react",
+    "moduleResolution": "node",
+    "forceConsistentCasingInFileNames": true,
+    "noImplicitReturns": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "experimentalDecorators": true,
+    "lib": ["dom", "es2022", "dom.iterable"],
+    "baseUrl": "./",
+    "paths": {
+      "wkspc/*": ["*", "bazel-out/k8-opt/bin/*"]
+    },
+    "esModuleInterop": true,
+    "downlevelIteration": true,
+    "module": "esnext",
+    "target": "es2020",
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "rootDirs": [
+      ".",
+      // Add all possible bazel-out directories
+      // See https://github.com/microsoft/TypeScript/issues/37257
+      "./bazel-out/darwin-dbg/bin",
+      "./bazel-out/darwin-fastbuild/bin",
+      "./bazel-out/k8-dbg/bin",
+      "./bazel-out/k8-fastbuild/bin",
+      "./bazel-out/k8-opt/bin",
+      "./bazel-out/k8-opt-arm64/bin",
+      "./bazel-out/x64_windows-dbg/bin",
+      "./bazel-out/x64_windows-fastbuild/bin"
+    ],
+    "allowJs": true,
+    "useUnknownInCatchVariables": false,
+    "isolatedModules": true
+  },
+  "exclude": [
+    // Some typescript dependencies that get pulled in
+    // when you set allowJs to true.
+    "bazel-out/host/bin/external/npm/typescript/*",
+    "bazel-out/*exec*/bin/external/npm/typescript/*"
+  ]
+}