fix: Enable incremental TSC builds (#19293)

.gitignore

@@ -48,6 +48,9 @@ typings/
 # Optional eslint cache
 .eslintcache
 
+# Build cache
+tsconfig.tsbuildinfo
+
 # Optional REPL history
 .node_repl_history
 

.npmignore

@@ -8,6 +8,7 @@ coverage
 .codeclimate.yml
 .github
 babel.config.js
+tsconfig.tsbuildinfo
 
 #linters
 .jscsrc

package.json

@@ -26,7 +26,9 @@
     "start": "node index.js",
     "test-with-coverage": "jest test --coverage",
     "test": "jest test",
-    "test-watch": "jest test --watch"
+    "test-watch": "jest test --watch",
+    "clean": "rimraf coverage dist tsconfig.tsbuildinfo",
+    "prepack": "npm run clean && npm run build"
   },
   "author": "Koen Kanters",
   "license": "GPL-3.0",

tsconfig.json

@@ -15,7 +15,8 @@
         "rootDir": "lib",
         "inlineSourceMap": true,
         "resolveJsonModule": true,
-        "experimentalDecorators": true
+        "experimentalDecorators": true,
+        "incremental": true
     },
     "include": [
         "lib/**/*",