compile vs tslints services dts, null check lint

Jakefile.js

@@ -773,7 +773,8 @@ task("update-sublime", ["local", serverFile], function() {
 var tslintRuleDir = "scripts/tslint";
 var tslintRules = ([
     "nextLineRule",
-    "noInferrableTypesRule"
+    "noInferrableTypesRule",
+    "noNullRule"
 ]);
 var tslintRulesFiles = tslintRules.map(function(p) {
     return path.join(tslintRuleDir, p + ".ts");

scripts/tslint/nextLineRule.ts

@@ -1,4 +1,4 @@
-/// <reference path="../../lib/typescriptServices.d.ts" />
+/// <reference path="../../node_modules/tslint/typings/typescriptServices.d.ts" />
 /// <reference path="../../node_modules/tslint/lib/tslint.d.ts" />
 
 const OPTION_CATCH = "check-catch";

scripts/tslint/noInferrableTypesRule.ts

@@ -1,4 +1,4 @@
-/// <reference path="../../lib/typescriptServices.d.ts" />
+/// <reference path="../../node_modules/tslint/typings/typescriptServices.d.ts" />
 /// <reference path="../../node_modules/tslint/lib/tslint.d.ts" />
 
 

scripts/tslint/noNullRule.ts

@@ -0,0 +1,20 @@
+/// <reference path="../../node_modules/tslint/typings/typescriptServices.d.ts" />
+/// <reference path="../../node_modules/tslint/lib/tslint.d.ts" />
+
+
+export class Rule extends Lint.Rules.AbstractRule {
+    public static FAILURE_STRING = "Don't use the 'null' keyword - use 'undefined' for missing values instead";
+
+    public apply(sourceFile: ts.SourceFile): Lint.RuleFailure[] {
+        return this.applyWithWalker(new NullWalker(sourceFile, this.getOptions()));
+    }
+}
+
+class NullWalker extends Lint.RuleWalker {
+    visitNode(node: ts.Node) {
+        super.visitNode(node);
+        if (node.kind === ts.SyntaxKind.NullKeyword) {
+            this.addFailure(this.createFailure(node.getStart(), node.getWidth(), Rule.FAILURE_STRING));
+        }
+    }
+}

tslint.json

@@ -38,6 +38,7 @@
         ],
         "no-internal-module": true,
         "no-trailing-whitespace": true,
-        "no-inferrable-types": true
+        "no-inferrable-types": true,
+        "no-null": true
   }
 }