chore: use jest instead of mocha

Author: ktsn

package.json

@@ -20,19 +20,33 @@
     "prepublishOnly": "npm run clean && npm run test && npm run build",
     "clean": "rm -rf lib",
     "build": "tsc -p src",
-    "dev": "npm run test:unit -- -w",
+    "dev": "jest --watch",
     "lint": "tslint -p . && prettier --list-different \"{src,scripts,test}/**/*.{js,ts}\"",
     "format": "prettier --write \"{src,scripts,test}/**/*.{js,ts}\"",
     "test": "npm run lint && npm run test:unit",
-    "test:unit": "mocha --require espower-typescript/guess test/**/*.ts"
+    "test:unit": "jest"
+  },
+  "jest": {
+    "transform": {
+      "^.+\\.(js|ts)$": "ts-jest"
+    },
+    "testRegex": "/test/.*\\.spec\\.(js|ts)$",
+    "moduleFileExtensions": [
+      "ts",
+      "js",
+      "json"
+    ],
+    "globals": {
+      "ts-jest": {
+        "tsConfigFile": "test/tsconfig.json"
+      }
+    }
   },
   "devDependencies": {
-    "@types/mocha": "^2.2.48",
-    "@types/power-assert": "1.4.29",
-    "espower-typescript": "^8.1.3",
-    "mocha": "^5.0.1",
-    "power-assert": "^1.4.4",
+    "@types/jest": "^22.1.3",
+    "jest": "^22.4.2",
     "prettier": "1.11.0",
+    "ts-jest": "^22.4.0",
     "tslint": "^5.9.1",
     "tslint-config-ktsn": "^2.1.0",
     "tslint-config-prettier": "^1.9.0",

test/tsconfig.json

@@ -1,6 +1,7 @@
 {
   "extends": "../tsconfig.json",
   "compilerOptions": {
-    "sourceMap": true
+    "sourceMap": true,
+    "outDir": ".tmp"
   }
 }