Update jest config

Summary:
We don't want to test again against the compiled JS output.
Also, we *do* want to fail if we break the config and don't
actually run any tests.

Reviewed By: nikoant

Differential Revision: D20068114

fbshipit-source-id: c46e5a25fcd155d160f717a9db8f088787913a28

pkg/jestconfig.json

@@ -1,7 +1,11 @@
 {
   "transform": {
-    "^.+\\.(t|j)sx?$": "ts-jest"
+    "^.+\\.tsx?$": "ts-jest"
   },
   "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
+  "testPathIgnorePatterns": [
+    "\/node_modules\/",
+    "\/lib\/"
+  ],
   "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"]
 }

pkg/package.json

@@ -26,7 +26,7 @@
     "prepare": "yarn run build",
     "prepublishOnly": "yarn test && yarn run lint",
     "preversion": "yarn run lint",
-    "test": "jest --config jestconfig.json --passWithNoTests",
+    "test": "jest --config jestconfig.json",
     "lint": "eslint -c ../../sonar/.eslintrc.js src/**/* --ext .js,.ts  && tsc --noemit",
     "fix": "eslint -c ../../sonar/.eslintrc.js src/**/* --fix --ext .js,.ts",
     "run": "yarn run build && node lib/cli.js"