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 +1,45 @@
+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 = "a_b",
+    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_a_b",
+    # Expect this source to be generated by swc transpilation.
+    srcs = ["b.js"],
+)
+
+# Expect not to get:
+# ERROR: file 'examples/ts_js_interop/c.js' is generated by these conflicting actions:
+# Label: //examples/ts_js_interop:c_d_tsc, //examples/ts_js_interop:c_d_transpile
+ts_project(
+    name = "c_d",
+    srcs = [
+        "c.js",
+        "d.ts",
+    ],
+    allow_js = True,
+    declaration = True,
+    resolve_json_module = True,
+    transpiler = partial.make(
+        swc,
+        swcrc = ":.swcrc",
+    ),
+    tsconfig = ":tsconfig.emit.json",
+)

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/c.js

@@ -0,0 +1,2 @@
+const c = 1
+export default c

examples/ts_js_interop/d.ts

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

examples/ts_js_interop/tsconfig.emit.json

@@ -0,0 +1,12 @@
+{
+    "compilerOptions": {
+        "declaration": true,
+        "moduleResolution": "node",
+        "baseUrl": "./",
+        "esModuleInterop": true,
+        "rootDirs": ["."],
+        "allowJs": true,
+        "resolveJsonModule": true
+    },
+    "exclude": []
+}

examples/ts_js_interop/tsconfig.json

@@ -0,0 +1,13 @@
+{
+    "compilerOptions": {
+        "emitDeclarationOnly": true,
+        "declaration": true,
+        "moduleResolution": "node",
+        "baseUrl": "./",
+        "esModuleInterop": true,
+        "rootDirs": ["."],
+        "allowJs": true,
+        "resolveJsonModule": true
+    },
+    "exclude": []
+}