Add ts-jest so Jest can test TypeScript files

package-lock.json

@@ -1219,6 +1219,15 @@
         }
       }
     },
+    "bs-logger": {
+      "version": "0.2.6",
+      "resolved": "https://registry.npmjs.org/bs-logger/-/bs-logger-0.2.6.tgz",
+      "integrity": "sha512-pd8DCoxmbgc7hyPKOvxtqNcjYoOsABPQdcCUjGp3d42VR2CX1ORhk2A87oqqu5R1kk+76nsxZupkmyd+MVtCog==",
+      "dev": true,
+      "requires": {
+        "fast-json-stable-stringify": "2.x"
+      }
+    },
     "bser": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/bser/-/bser-2.1.0.tgz",
@@ -6955,6 +6964,31 @@
       "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=",
       "dev": true
     },
+    "ts-jest": {
+      "version": "24.0.2",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-24.0.2.tgz",
+      "integrity": "sha512-h6ZCZiA1EQgjczxq+uGLXQlNgeg02WWJBbeT8j6nyIBRQdglqbvzDoHahTEIiS6Eor6x8mK6PfZ7brQ9Q6tzHw==",
+      "dev": true,
+      "requires": {
+        "bs-logger": "0.x",
+        "buffer-from": "1.x",
+        "fast-json-stable-stringify": "2.x",
+        "json5": "2.x",
+        "make-error": "1.x",
+        "mkdirp": "0.x",
+        "resolve": "1.x",
+        "semver": "^5.5",
+        "yargs-parser": "10.x"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.7.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+          "dev": true
+        }
+      }
+    },
     "ts-node": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-7.0.1.tgz",

package.json

@@ -38,6 +38,7 @@
     "eslint": "6.1.0",
     "jest": "^24.9.0",
     "prettier": "1.16.4",
+    "ts-jest": "^24.0.2",
     "ts-node": "~7.0.0",
     "tslint": "~5.11.0",
     "typescript": "~3.4.5"