fix napi double .d.ts formatting (#9238)

packages/turbo-repository/package.json

@@ -5,8 +5,8 @@
   "bugs": "https://github.com/vercel/turborepo/issues",
   "homepage": "https://turbo.build/repo",
   "scripts": {
-    "build": "napi build --platform -p turborepo-napi --cargo-cwd ../../ --cargo-name turborepo_napi native --js false --dts ../js/index.d.ts && mkdir -p js/dist && cp js/index.js js/dist/index.js && cp js/index.d.ts js/dist/index.d.ts",
-    "build:release": "napi build --release --platform -p turborepo-napi --cargo-cwd ../../ --cargo-name turborepo_napi native --js false",
+    "build": "bash scripts/build.sh",
+    "build:release": "bash scripts/build.sh release",
     "package": "node scripts/publish.mjs",
     "test": "node --import tsx --test __tests__/*.test.ts"
   },
@@ -17,6 +17,7 @@
     "@napi-rs/cli": "^2.16.3",
     "execa": "^8.0.1",
     "fs-extra": "^11.1.1",
+    "prettier": "^3.2.5",
     "tsx": "^4.7.2"
   },
   "main": "dist/index.js",

packages/turbo-repository/scripts/build.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+flags="\
+  --platform \
+  -p turborepo-napi \
+  --cargo-cwd ../../ \
+  --cargo-name turborepo_napi \
+  native \
+  --js false \
+"
+
+if [ "$1" == "release" ]; then
+  flags+=" --release"
+else
+  flags+=" --dts ../js/index.d.ts"
+fi
+
+node_modules/.bin/napi build $flags
+
+# Unfortunately, when napi generates a .d.ts file, it doesn't match our formatting rules (it doesn't have semicolons).
+# Since there's now way to configure this from napi itself, so we need to run prettier on it after generating it.
+node_modules/.bin/prettier --write js/index.d.ts
+
+mkdir -p js/dist
+cp js/index.{js,d.ts} js/dist/