feat(CLI): v2

tslint.json

@@ -1,9 +1,34 @@
 {
-  "extends": ["tslint:latest", "tslint-config-prettier"],
+  "extends": ["tslint:latest", "tslint-config-prettier", "tslint-immutable"],
   "rules": {
     "interface-name": [true, "never-prefix"],
     // TODO: allow devDependencies only in **/*.spec.ts files:
-    // https://github.com/palantir/tslint/pull/3708
-    "no-implicit-dependencies": [true, "dev"]
+    // waiting on https://github.com/palantir/tslint/pull/3708
+    "no-implicit-dependencies": [true, "dev"],
+
+    /* tslint-immutable rules */
+    // Recommended built-in rules
+    "no-var-keyword": true,
+    "no-parameter-reassignment": true,
+    "typedef": [true, "call-signature"],
+
+    // Immutability rules
+    "readonly-keyword": true,
+    "readonly-array": true,
+    "no-let": true,
+    "no-object-mutation": true,
+    "no-delete": true,
+    "no-method-signature": true,
+
+    // Functional style rules
+    "no-this": true,
+    "no-class": true,
+    "no-mixed-interface": true,
+    "no-expression-statement": [
+      true,
+      { "ignore-prefix": ["console.", "process.exit"] }
+    ],
+    "no-if-statement": true
+    /* end tslint-immutable rules */
   }
 }