build: Enable typescript composite mode and clean

Moves all typings to the dist-types directories from the dist
directories so that we can let vite clean the dist directories on build
without clobbering the typings generated by tsc.

2 files changed, 7 insertions, 1 deletions

diff --git a/packages/preload/package.json b/packages/preload/package.json
index 2ad215c..e050b9a 100644
--- a/packages/preload/package.json
+++ b/packages/preload/package.json
@@ -4,7 +4,9 @@
   "private": true,
   "sideEffects": false,
   "main": "dist/index.cjs",
+  "types": "dist-types/index.d.ts",
   "scripts": {
+    "clean": "rimraf dist dist-types tsconfig.tsbuildinfo",
     "build": "vite build",
     "typecheck": "tsc"
   },
@@ -15,6 +17,7 @@
     "mobx-state-tree": "^5.1.0"
   },
   "devDependencies": {
+    "rimraf": "^3.0.2",
     "typescript": "^4.5.4",
     "vite": "^2.7.6"
   }
diff --git a/packages/preload/tsconfig.json b/packages/preload/tsconfig.json
index 8bfa0ec..66726e3 100644
--- a/packages/preload/tsconfig.json
+++ b/packages/preload/tsconfig.json
@@ -1,7 +1,10 @@
 {
   "extends": "../../tsconfig.json",
   "compilerOptions": {
-    "noEmit": true
+    "composite": true,
+    "declarationDir": "dist-types",
+    "emitDeclarationOnly": true,
+    "rootDir": "src"
   },
   "references": [
     {