fix(jsii): excessive "exclude" in "tsconfig.json" (#1736)

In cases where both `jsii.tsc.outDir` and `jsii.tsc.rootDir` are set, and `rootDir` happens to be a parent directory of `outDir`, the generated `exclude` would match all files from `rootDir`, resulting in an empty input set.

This makes sure to not emit an `exclude` declaration for `outDir` in this case, so that input files do not get excluded.



---

By submitting this pull request, I confirm that my contribution is made under the terms of the [Apache 2.0 license].

[Apache 2.0 license]: https://www.apache.org/licenses/LICENSE-2.0

packages/@scope/jsii-calc-base-of-base/package.json

@@ -21,8 +21,8 @@
   "engines": {
     "node": ">= 10.3.0"
   },
-  "main": "lib/index.js",
-  "types": "lib/index.d.ts",
+  "main": "build/lib/index.js",
+  "types": "build/lib/index.d.ts",
   "scripts": {
     "build": "jsii --project-references && jsii-rosetta",
     "pacmak": "jsii-pacmak",
@@ -58,6 +58,10 @@
         "module": "scope.jsii_calc_base_of_base"
       }
     },
+    "tsc": {
+      "outDir": "./build",
+      "rootDir": "."
+    },
     "versionFormat": "short",
     "metadata": {
       "jsii": {

packages/jsii/lib/compiler.ts

@@ -318,8 +318,12 @@ export class Compiler implements Emitter {
       ],
       exclude: [
         'node_modules',
-        ...pi.excludeTypescript,
-        ...(pi.tsc?.outDir != null
+        ...(pi.excludeTypescript ?? []),
+        ...(pi.tsc?.outDir != null &&
+        (pi.tsc?.rootDir == null ||
+          path
+            .resolve(pi.tsc.outDir)
+            .startsWith(path.resolve(pi.tsc.rootDir) + path.sep))
           ? [path.join(pi.tsc.outDir, '**', '*.ts')]
           : []),
       ],