Replace TSLint with ESLint

Install ESLint with TypeScript parser.  Enable recommended ruleset.

Uninstall TSLint and remove configuration file.

Author: wimpyprogrammer

.eslintrc.json

@@ -0,0 +1,9 @@
+{
+	"parser": "@typescript-eslint/parser",
+	"extends": [
+		"plugin:@typescript-eslint/recommended"
+	],
+	"parserOptions": {
+		"ecmaVersion": 2018
+	}
+}

package.json

@@ -20,7 +20,7 @@
     "build-demo": "webpack --config demo/webpack.config.js",
     "clean": "rimraf lib/*",
     "format": "prettier --write 'src/**'",
-    "lint": "tsc; tslint -p ./",
+    "lint": "tsc; eslint . --ext .js,.ts",
     "precommit": "pretty-quick --staged",
     "test": "jest --coverage",
     "travisci": "npm run lint && npm run test"
@@ -50,14 +50,16 @@
     "@babel/preset-typescript": "^7.0.0-beta.54",
     "@types/es6-shim": "^0.31.37",
     "@types/jest": "^23.3.1",
+    "@typescript-eslint/eslint-plugin": "^2.2.0",
+    "@typescript-eslint/parser": "^2.2.0",
+    "eslint": "^6.3.0",
     "husky": "^0.14.3",
     "jest": "^23.4.1",
     "prettier": "^1.13.7",
     "pretty-quick": "^1.6.0",
     "rimraf": "^2.6.2",
     "ts-jest": "^23.0.1",
     "ts-loader": "^5.0.0",
-    "tslint": "^5.11.0",
     "typescript": "^2.9.2",
     "webpack": "^4.17.2",
     "webpack-command": "^0.4.1"