Port Andy's fix in

Kanchalai Tanglertsampan · Kanchalai Tanglertsampan · commit d2f7764f0371 · 2016-10-07T14:34:53.000-07:00
diff --git a/scripts/tslint/preferConstRule.ts b/scripts/tslint/preferConstRule.ts
@@ -126,7 +126,7 @@ class PreferConstWalker extends Lint.RuleWalker {
     visitModuleDeclaration(node: ts.ModuleDeclaration) {
         if (node.body.kind === ts.SyntaxKind.ModuleBlock) {
             // For some reason module blocks are left out of the visit block traversal
-            this.visitBlock(node.body as ts.ModuleBlock);
+            this.visitBlock(node.body as any as ts.Block);
         }
         super.visitModuleDeclaration(node);
     }

Original file line number	Diff line number	Diff line change
`@@ -126,7 +126,7 @@ class PreferConstWalker extends Lint.RuleWalker {`
`126`	`126`	`visitModuleDeclaration(node: ts.ModuleDeclaration) {`
`127`	`127`	`if (node.body.kind === ts.SyntaxKind.ModuleBlock) {`
`128`	`128`	`// For some reason module blocks are left out of the visit block traversal`
`129`		`- this.visitBlock(node.body as ts.ModuleBlock);`
	`129`	`+ this.visitBlock(node.body as any as ts.Block);`
`130`	`130`	`}`
`131`	`131`	`super.visitModuleDeclaration(node);`
`132`	`132`	`}`