added ts-jest references

Author: mdnorman

jest.config.js

@@ -0,0 +1,4 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

package-lock.json

@@ -17,18 +17,19 @@
     "clean": "rm -rf dist && rm -rf out",
     "build": "tsc",
     "rebuild": "npm run clean && npm run build",
-    "pretest": "tsc && tsc -p spec/tsconfig.json",
     "test": "jest",
     "posttest": "npm run lint",
     "lint": "tslint -c tslint.json --project tsconfig.json && tslint -c tslint.json --project spec/tsconfig.json",
     "pretty": "pretty-quick --stage"
   },
   "dependencies": {},
   "devDependencies": {
+    "@types/jest": "25.1.3",
     "@types/node": "13.7.4",
     "jest": "25.1.0",
     "prettier": "1.19.1",
     "pretty-quick": "2.0.1",
+    "ts-jest": "25.2.1",
     "ts-node": "8.6.2",
     "tslint": "5.20.1",
     "tslint-config-airbnb": "5.11.2",

package.json

@@ -5,7 +5,6 @@
     "target": "es5",
     "lib": ["es6"],
     "moduleResolution": "node",
-    "noImplicitAny": true,
     "noImplicitReturns": true,
     "noUnusedLocals": true,
     "noImplicitThis": true,