Treat a property foo: () => void like foo = () => {}: as a method declaration.

src/rules/memberOrderingRule.ts

@@ -262,8 +262,9 @@ export class MemberOrderingWalker extends Lint.RuleWalker {
     }
 
     public visitPropertyDeclaration(node: ts.PropertyDeclaration) {
-        const { initializer } = node;
-        const isFunction = initializer != null
+        const { initializer, type } = node;
+        const isFunction = type && type.kind === ts.SyntaxKind.FunctionType
+            || initializer != null
             && (initializer.kind === ts.SyntaxKind.ArrowFunction || initializer.kind === ts.SyntaxKind.FunctionExpression);
         this.checkModifiersAndSetPrevious(node, getModifiers(isFunction, node.modifiers));
         this.pushMember(getNodeAndModifiers(node, isFunction));

test/rules/member-ordering/method/test.ts.lint

@@ -28,8 +28,8 @@ interface IArrowMethods {
 
 class ArrowMethods {
     public a = 5;
-    private callback: () => void
     public b = "foo";
+    private callback: () => void;
     public c() {}
     public d = () => {};
     public e = function() {};

test/rules/member-ordering/order/fields-first/test.ts.lint

@@ -10,10 +10,11 @@ class Good {
     protected static h() {}
     private static i = () => {};
     j = () => {};
+    jj: () => void;
     protected k() {};
     private l = () => {};
 }
-    
+
 interface IGood {
     foo: number;
     arrowsAreFields: () => void;

test/rules/member-ordering/order/instance-sandwich/test.ts.lint

@@ -7,13 +7,14 @@ class Good {
     private f = foo();
     constructor() {}
     j = () => {};
+    jj: () => void;
     protected k() {};
     private l = () => {};
     public static g() {}
     protected static h() {}
     private static i = () => {};
 }
-    
+
 interface IGood {
     foo: number;
     arrowsAreFields: () => void;

test/rules/member-ordering/order/statics-first/test.ts.lint

@@ -10,10 +10,11 @@ class Good {
     private f = foo();
     constructor() {}
     j = () => {};
+    jj: () => void;
     protected k() {};
     private l = () => {};
 }
-    
+
 interface IGood {
     foo: number;
     arrowsAreFields: () => void;