Add command validating the build is under the right path

Author: dprevost-LMI

package.json

@@ -50,7 +50,9 @@
     "build": "run-s clean compile",
     "clean": "run-p clean:*",
     "clean:build": "rimraf ./lib",
-    "compile": "tsc --build tsconfig.build.json",
+    "compile": "run-s compile:*",
+    "compile:lib": "tsc --build tsconfig.build.json",
+    "compile:check": "if [ ! -f lib/index.js ] || [ $(find lib -type f | wc -l) -le 30 ]; then echo 'File structure under lib is broken'; exit 1; fi",
     "tsc:root-types": "node types-checks-filter-out-node_modules.js",
     "test": "run-s test:*",
     "test:tsc": "tsc --project tsconfig.json --noEmit --rootDir .",